md_ddf.c

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    1 /*-
    2  * Copyright (c) 2012 Alexander Motin <mav@FreeBSD.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/9.1/sys/geom/raid/md_ddf.c 240558 2012-09-16 11:02:22Z mav $");
   29 
   30 #include <sys/param.h>
   31 #include <sys/bio.h>
   32 #include <sys/endian.h>
   33 #include <sys/kernel.h>
   34 #include <sys/kobj.h>
   35 #include <sys/limits.h>
   36 #include <sys/lock.h>
   37 #include <sys/malloc.h>
   38 #include <sys/mutex.h>
   39 #include <sys/systm.h>
   40 #include <sys/time.h>
   41 #include <sys/clock.h>
   42 #include <geom/geom.h>
   43 #include "geom/raid/g_raid.h"
   44 #include "geom/raid/md_ddf.h"
   45 #include "g_raid_md_if.h"
   46 
   47 static MALLOC_DEFINE(M_MD_DDF, "md_ddf_data", "GEOM_RAID DDF metadata");
   48 
   49 #define DDF_MAX_DISKS_HARD      128
   50 
   51 #define DDF_MAX_DISKS   16
   52 #define DDF_MAX_VDISKS  7
   53 #define DDF_MAX_PARTITIONS      1
   54 
   55 #define DECADE (3600*24*(365*10+2))     /* 10 years in seconds. */
   56 
   57 struct ddf_meta {
   58         u_int   sectorsize;
   59         u_int   bigendian;
   60         struct ddf_header *hdr;
   61         struct ddf_cd_record *cdr;
   62         struct ddf_pd_record *pdr;
   63         struct ddf_vd_record *vdr;
   64         void *cr;
   65         struct ddf_pdd_record *pdd;
   66         struct ddf_bbm_log *bbm;
   67 };
   68 
   69 struct ddf_vol_meta {
   70         u_int   sectorsize;
   71         u_int   bigendian;
   72         struct ddf_header *hdr;
   73         struct ddf_cd_record *cdr;
   74         struct ddf_vd_entry *vde;
   75         struct ddf_vdc_record *vdc;
   76         struct ddf_vdc_record *bvdc[DDF_MAX_DISKS_HARD];
   77 };
   78 
   79 struct g_raid_md_ddf_perdisk {
   80         struct ddf_meta  pd_meta;
   81 };
   82 
   83 struct g_raid_md_ddf_pervolume {
   84         struct ddf_vol_meta              pv_meta;
   85         int                              pv_started;
   86         struct callout                   pv_start_co;   /* STARTING state timer. */
   87 };
   88 
   89 struct g_raid_md_ddf_object {
   90         struct g_raid_md_object  mdio_base;
   91         u_int                    mdio_bigendian;
   92         struct ddf_meta          mdio_meta;
   93         int                      mdio_starting;
   94         struct callout           mdio_start_co; /* STARTING state timer. */
   95         int                      mdio_started;
   96         struct root_hold_token  *mdio_rootmount; /* Root mount delay token. */
   97 };
   98 
   99 static g_raid_md_create_req_t g_raid_md_create_req_ddf;
  100 static g_raid_md_taste_t g_raid_md_taste_ddf;
  101 static g_raid_md_event_t g_raid_md_event_ddf;
  102 static g_raid_md_volume_event_t g_raid_md_volume_event_ddf;
  103 static g_raid_md_ctl_t g_raid_md_ctl_ddf;
  104 static g_raid_md_write_t g_raid_md_write_ddf;
  105 static g_raid_md_fail_disk_t g_raid_md_fail_disk_ddf;
  106 static g_raid_md_free_disk_t g_raid_md_free_disk_ddf;
  107 static g_raid_md_free_volume_t g_raid_md_free_volume_ddf;
  108 static g_raid_md_free_t g_raid_md_free_ddf;
  109 
  110 static kobj_method_t g_raid_md_ddf_methods[] = {
  111         KOBJMETHOD(g_raid_md_create_req,        g_raid_md_create_req_ddf),
  112         KOBJMETHOD(g_raid_md_taste,     g_raid_md_taste_ddf),
  113         KOBJMETHOD(g_raid_md_event,     g_raid_md_event_ddf),
  114         KOBJMETHOD(g_raid_md_volume_event,      g_raid_md_volume_event_ddf),
  115         KOBJMETHOD(g_raid_md_ctl,       g_raid_md_ctl_ddf),
  116         KOBJMETHOD(g_raid_md_write,     g_raid_md_write_ddf),
  117         KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_ddf),
  118         KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_ddf),
  119         KOBJMETHOD(g_raid_md_free_volume,       g_raid_md_free_volume_ddf),
  120         KOBJMETHOD(g_raid_md_free,      g_raid_md_free_ddf),
  121         { 0, 0 }
  122 };
  123 
  124 static struct g_raid_md_class g_raid_md_ddf_class = {
  125         "DDF",
  126         g_raid_md_ddf_methods,
  127         sizeof(struct g_raid_md_ddf_object),
  128         .mdc_enable = 1,
  129         .mdc_priority = 100
  130 };
  131 
  132 #define GET8(m, f)      ((m)->f)
  133 #define GET16(m, f)     ((m)->bigendian ? be16dec(&(m)->f) : le16dec(&(m)->f))
  134 #define GET32(m, f)     ((m)->bigendian ? be32dec(&(m)->f) : le32dec(&(m)->f))
  135 #define GET64(m, f)     ((m)->bigendian ? be64dec(&(m)->f) : le64dec(&(m)->f))
  136 #define GET8D(m, f)     (f)
  137 #define GET16D(m, f)    ((m)->bigendian ? be16dec(&f) : le16dec(&f))
  138 #define GET32D(m, f)    ((m)->bigendian ? be32dec(&f) : le32dec(&f))
  139 #define GET64D(m, f)    ((m)->bigendian ? be64dec(&f) : le64dec(&f))
  140 #define GET8P(m, f)     (*(f))
  141 #define GET16P(m, f)    ((m)->bigendian ? be16dec(f) : le16dec(f))
  142 #define GET32P(m, f)    ((m)->bigendian ? be32dec(f) : le32dec(f))
  143 #define GET64P(m, f)    ((m)->bigendian ? be64dec(f) : le64dec(f))
  144 
  145 #define SET8P(m, f, v)                                                  \
  146         (*(f) = (v))
  147 #define SET16P(m, f, v)                                                 \
  148         do {                                                            \
  149                 if ((m)->bigendian)                                     \
  150                         be16enc((f), (v));                              \
  151                 else                                                    \
  152                         le16enc((f), (v));                              \
  153         } while (0)
  154 #define SET32P(m, f, v)                                                 \
  155         do {                                                            \
  156                 if ((m)->bigendian)                                     \
  157                         be32enc((f), (v));                              \
  158                 else                                                    \
  159                         le32enc((f), (v));                              \
  160         } while (0)
  161 #define SET64P(m, f, v)                                                 \
  162         do {                                                            \
  163                 if ((m)->bigendian)                                     \
  164                         be64enc((f), (v));                              \
  165                 else                                                    \
  166                         le64enc((f), (v));                              \
  167         } while (0)
  168 #define SET8(m, f, v)   SET8P((m), &((m)->f), (v))
  169 #define SET16(m, f, v)  SET16P((m), &((m)->f), (v))
  170 #define SET32(m, f, v)  SET32P((m), &((m)->f), (v))
  171 #define SET64(m, f, v)  SET64P((m), &((m)->f), (v))
  172 #define SET8D(m, f, v)  SET8P((m), &(f), (v))
  173 #define SET16D(m, f, v) SET16P((m), &(f), (v))
  174 #define SET32D(m, f, v) SET32P((m), &(f), (v))
  175 #define SET64D(m, f, v) SET64P((m), &(f), (v))
  176 
  177 #define GETCRNUM(m)     (GET32((m), hdr->cr_length) /                   \
  178         GET16((m), hdr->Configuration_Record_Length))
  179 
  180 #define GETVDCPTR(m, n) ((struct ddf_vdc_record *)((uint8_t *)(m)->cr + \
  181         (n) * GET16((m), hdr->Configuration_Record_Length) *            \
  182         (m)->sectorsize))
  183 
  184 #define GETSAPTR(m, n)  ((struct ddf_sa_record *)((uint8_t *)(m)->cr +  \
  185         (n) * GET16((m), hdr->Configuration_Record_Length) *            \
  186         (m)->sectorsize))
  187 
  188 static int
  189 isff(uint8_t *buf, int size)
  190 {
  191         int i;
  192 
  193         for (i = 0; i < size; i++)
  194                 if (buf[i] != 0xff)
  195                         return (0);
  196         return (1);
  197 }
  198 
  199 static void
  200 print_guid(uint8_t *buf)
  201 {
  202         int i, ascii;
  203 
  204         ascii = 1;
  205         for (i = 0; i < 24; i++) {
  206                 if (buf[i] != 0 && (buf[i] < ' ' || buf[i] > 127)) {
  207                         ascii = 0;
  208                         break;
  209                 }
  210         }
  211         if (ascii) {
  212                 printf("'%.24s'", buf);
  213         } else {
  214                 for (i = 0; i < 24; i++)
  215                         printf("%02x", buf[i]);
  216         }
  217 }
  218 
  219 static void
  220 g_raid_md_ddf_print(struct ddf_meta *meta)
  221 {
  222         struct ddf_vdc_record *vdc;
  223         struct ddf_vuc_record *vuc;
  224         struct ddf_sa_record *sa;
  225         uint64_t *val2;
  226         uint32_t val;
  227         int i, j, k, num, num2;
  228 
  229         if (g_raid_debug < 1)
  230                 return;
  231 
  232         printf("********* DDF Metadata *********\n");
  233         printf("**** Header ****\n");
  234         printf("DDF_Header_GUID      ");
  235         print_guid(meta->hdr->DDF_Header_GUID);
  236         printf("\n");
  237         printf("DDF_rev              %8.8s\n", (char *)&meta->hdr->DDF_rev[0]);
  238         printf("Sequence_Number      0x%08x\n", GET32(meta, hdr->Sequence_Number));
  239         printf("TimeStamp            0x%08x\n", GET32(meta, hdr->TimeStamp));
  240         printf("Open_Flag            0x%02x\n", GET16(meta, hdr->Open_Flag));
  241         printf("Foreign_Flag         0x%02x\n", GET16(meta, hdr->Foreign_Flag));
  242         printf("Diskgrouping         0x%02x\n", GET16(meta, hdr->Diskgrouping));
  243         printf("Primary_Header_LBA   %ju\n", GET64(meta, hdr->Primary_Header_LBA));
  244         printf("Secondary_Header_LBA %ju\n", GET64(meta, hdr->Secondary_Header_LBA));
  245         printf("WorkSpace_Length     %u\n", GET32(meta, hdr->WorkSpace_Length));
  246         printf("WorkSpace_LBA        %ju\n", GET64(meta, hdr->WorkSpace_LBA));
  247         printf("Max_PD_Entries       %u\n", GET16(meta, hdr->Max_PD_Entries));
  248         printf("Max_VD_Entries       %u\n", GET16(meta, hdr->Max_VD_Entries));
  249         printf("Max_Partitions       %u\n", GET16(meta, hdr->Max_Partitions));
  250         printf("Configuration_Record_Length %u\n", GET16(meta, hdr->Configuration_Record_Length));
  251         printf("Max_Primary_Element_Entries %u\n", GET16(meta, hdr->Max_Primary_Element_Entries));
  252         printf("Controller Data      %u:%u\n", GET32(meta, hdr->cd_section), GET32(meta, hdr->cd_length));
  253         printf("Physical Disk        %u:%u\n", GET32(meta, hdr->pdr_section), GET32(meta, hdr->pdr_length));
  254         printf("Virtual Disk         %u:%u\n", GET32(meta, hdr->vdr_section), GET32(meta, hdr->vdr_length));
  255         printf("Configuration Recs   %u:%u\n", GET32(meta, hdr->cr_section), GET32(meta, hdr->cr_length));
  256         printf("Physical Disk Recs   %u:%u\n", GET32(meta, hdr->pdd_section), GET32(meta, hdr->pdd_length));
  257         printf("BBM Log              %u:%u\n", GET32(meta, hdr->bbmlog_section), GET32(meta, hdr->bbmlog_length));
  258         printf("Diagnostic Space     %u:%u\n", GET32(meta, hdr->Diagnostic_Space), GET32(meta, hdr->Diagnostic_Space_Length));
  259         printf("Vendor_Specific_Logs %u:%u\n", GET32(meta, hdr->Vendor_Specific_Logs), GET32(meta, hdr->Vendor_Specific_Logs_Length));
  260         printf("**** Controler Data ****\n");
  261         printf("Controller_GUID      ");
  262         print_guid(meta->cdr->Controller_GUID);
  263         printf("\n");
  264         printf("Controller_Type      0x%04x%04x 0x%04x%04x\n",
  265             GET16(meta, cdr->Controller_Type.Vendor_ID),
  266             GET16(meta, cdr->Controller_Type.Device_ID),
  267             GET16(meta, cdr->Controller_Type.SubVendor_ID),
  268             GET16(meta, cdr->Controller_Type.SubDevice_ID));
  269         printf("Product_ID           '%.16s'\n", (char *)&meta->cdr->Product_ID[0]);
  270         printf("**** Physical Disk Records ****\n");
  271         printf("Populated_PDEs       %u\n", GET16(meta, pdr->Populated_PDEs));
  272         printf("Max_PDE_Supported    %u\n", GET16(meta, pdr->Max_PDE_Supported));
  273         for (j = 0; j < GET16(meta, pdr->Populated_PDEs); j++) {
  274                 if (isff(meta->pdr->entry[j].PD_GUID, 24))
  275                         continue;
  276                 if (GET32(meta, pdr->entry[j].PD_Reference) == 0xffffffff)
  277                         continue;
  278                 printf("PD_GUID              ");
  279                 print_guid(meta->pdr->entry[j].PD_GUID);
  280                 printf("\n");
  281                 printf("PD_Reference         0x%08x\n",
  282                     GET32(meta, pdr->entry[j].PD_Reference));
  283                 printf("PD_Type              0x%04x\n",
  284                     GET16(meta, pdr->entry[j].PD_Type));
  285                 printf("PD_State             0x%04x\n",
  286                     GET16(meta, pdr->entry[j].PD_State));
  287                 printf("Configured_Size      %ju\n",
  288                     GET64(meta, pdr->entry[j].Configured_Size));
  289                 printf("Block_Size           %u\n",
  290                     GET16(meta, pdr->entry[j].Block_Size));
  291         }
  292         printf("**** Virtual Disk Records ****\n");
  293         printf("Populated_VDEs       %u\n", GET16(meta, vdr->Populated_VDEs));
  294         printf("Max_VDE_Supported    %u\n", GET16(meta, vdr->Max_VDE_Supported));
  295         for (j = 0; j < GET16(meta, vdr->Populated_VDEs); j++) {
  296                 if (isff(meta->vdr->entry[j].VD_GUID, 24))
  297                         continue;
  298                 printf("VD_GUID              ");
  299                 print_guid(meta->vdr->entry[j].VD_GUID);
  300                 printf("\n");
  301                 printf("VD_Number            0x%04x\n",
  302                     GET16(meta, vdr->entry[j].VD_Number));
  303                 printf("VD_Type              0x%04x\n",
  304                     GET16(meta, vdr->entry[j].VD_Type));
  305                 printf("VD_State             0x%02x\n",
  306                     GET8(meta, vdr->entry[j].VD_State));
  307                 printf("Init_State           0x%02x\n",
  308                     GET8(meta, vdr->entry[j].Init_State));
  309                 printf("Drive_Failures_Remaining %u\n",
  310                     GET8(meta, vdr->entry[j].Drive_Failures_Remaining));
  311                 printf("VD_Name              '%.16s'\n",
  312                     (char *)&meta->vdr->entry[j].VD_Name);
  313         }
  314         printf("**** Configuration Records ****\n");
  315         num = GETCRNUM(meta);
  316         for (j = 0; j < num; j++) {
  317                 vdc = GETVDCPTR(meta, j);
  318                 val = GET32D(meta, vdc->Signature);
  319                 switch (val) {
  320                 case DDF_VDCR_SIGNATURE:
  321                         printf("** Virtual Disk Configuration **\n");
  322                         printf("VD_GUID              ");
  323                         print_guid(vdc->VD_GUID);
  324                         printf("\n");
  325                         printf("Timestamp            0x%08x\n",
  326                             GET32D(meta, vdc->Timestamp));
  327                         printf("Sequence_Number      0x%08x\n",
  328                             GET32D(meta, vdc->Sequence_Number));
  329                         printf("Primary_Element_Count %u\n",
  330                             GET16D(meta, vdc->Primary_Element_Count));
  331                         printf("Stripe_Size          %u\n",
  332                             GET8D(meta, vdc->Stripe_Size));
  333                         printf("Primary_RAID_Level   0x%02x\n",
  334                             GET8D(meta, vdc->Primary_RAID_Level));
  335                         printf("RLQ                  0x%02x\n",
  336                             GET8D(meta, vdc->RLQ));
  337                         printf("Secondary_Element_Count %u\n",
  338                             GET8D(meta, vdc->Secondary_Element_Count));
  339                         printf("Secondary_Element_Seq %u\n",
  340                             GET8D(meta, vdc->Secondary_Element_Seq));
  341                         printf("Secondary_RAID_Level 0x%02x\n",
  342                             GET8D(meta, vdc->Secondary_RAID_Level));
  343                         printf("Block_Count          %ju\n",
  344                             GET64D(meta, vdc->Block_Count));
  345                         printf("VD_Size              %ju\n",
  346                             GET64D(meta, vdc->VD_Size));
  347                         printf("Block_Size           %u\n",
  348                             GET16D(meta, vdc->Block_Size));
  349                         printf("Rotate_Parity_count  %u\n",
  350                             GET8D(meta, vdc->Rotate_Parity_count));
  351                         printf("Associated_Spare_Disks");
  352                         for (i = 0; i < 8; i++) {
  353                                 if (GET32D(meta, vdc->Associated_Spares[i]) != 0xffffffff)
  354                                         printf(" 0x%08x", GET32D(meta, vdc->Associated_Spares[i]));
  355                         }
  356                         printf("\n");
  357                         printf("Cache_Flags          %016jx\n",
  358                             GET64D(meta, vdc->Cache_Flags));
  359                         printf("BG_Rate              %u\n",
  360                             GET8D(meta, vdc->BG_Rate));
  361                         printf("MDF_Parity_Disks     %u\n",
  362                             GET8D(meta, vdc->MDF_Parity_Disks));
  363                         printf("MDF_Parity_Generator_Polynomial 0x%04x\n",
  364                             GET16D(meta, vdc->MDF_Parity_Generator_Polynomial));
  365                         printf("MDF_Constant_Generation_Method 0x%02x\n",
  366                             GET8D(meta, vdc->MDF_Constant_Generation_Method));
  367                         printf("Physical_Disks      ");
  368                         num2 = GET16D(meta, vdc->Primary_Element_Count);
  369                         val2 = (uint64_t *)&(vdc->Physical_Disk_Sequence[GET16(meta, hdr->Max_Primary_Element_Entries)]);
  370                         for (i = 0; i < num2; i++)
  371                                 printf(" 0x%08x @ %ju",
  372                                     GET32D(meta, vdc->Physical_Disk_Sequence[i]),
  373                                     GET64P(meta, val2 + i));
  374                         printf("\n");
  375                         break;
  376                 case DDF_VUCR_SIGNATURE:
  377                         printf("** Vendor Unique Configuration **\n");
  378                         vuc = (struct ddf_vuc_record *)vdc;
  379                         printf("VD_GUID              ");
  380                         print_guid(vuc->VD_GUID);
  381                         printf("\n");
  382                         break;
  383                 case DDF_SA_SIGNATURE:
  384                         printf("** Spare Assignment Configuration **\n");
  385                         sa = (struct ddf_sa_record *)vdc;
  386                         printf("Timestamp            0x%08x\n",
  387                             GET32D(meta, sa->Timestamp));
  388                         printf("Spare_Type           0x%02x\n",
  389                             GET8D(meta, sa->Spare_Type));
  390                         printf("Populated_SAEs       %u\n",
  391                             GET16D(meta, sa->Populated_SAEs));
  392                         printf("MAX_SAE_Supported    %u\n",
  393                             GET16D(meta, sa->MAX_SAE_Supported));
  394                         for (i = 0; i < GET16D(meta, sa->Populated_SAEs); i++) {
  395                                 if (isff(sa->entry[i].VD_GUID, 24))
  396                                         continue;
  397                                 printf("VD_GUID             ");
  398                                 for (k = 0; k < 24; k++)
  399                                         printf("%02x", sa->entry[i].VD_GUID[k]);
  400                                 printf("\n");
  401                                 printf("Secondary_Element   %u\n",
  402                                     GET16D(meta, sa->entry[i].Secondary_Element));
  403                         }
  404                         break;
  405                 case 0x00000000:
  406                 case 0xFFFFFFFF:
  407                         break;
  408                 default:
  409                         printf("Unknown configuration signature %08x\n", val);
  410                         break;
  411                 }
  412         }
  413         printf("**** Physical Disk Data ****\n");
  414         printf("PD_GUID              ");
  415         print_guid(meta->pdd->PD_GUID);
  416         printf("\n");
  417         printf("PD_Reference         0x%08x\n",
  418             GET32(meta, pdd->PD_Reference));
  419         printf("Forced_Ref_Flag      0x%02x\n",
  420             GET8(meta, pdd->Forced_Ref_Flag));
  421         printf("Forced_PD_GUID_Flag  0x%02x\n",
  422             GET8(meta, pdd->Forced_PD_GUID_Flag));
  423 }
  424 
  425 static int
  426 ddf_meta_find_pd(struct ddf_meta *meta, uint8_t *GUID, uint32_t PD_Reference)
  427 {
  428         int i;
  429 
  430         for (i = 0; i < GET16(meta, pdr->Populated_PDEs); i++) {
  431                 if (GUID != NULL) {
  432                         if (memcmp(meta->pdr->entry[i].PD_GUID, GUID, 24) == 0)
  433                                 return (i);
  434                 } else if (PD_Reference != 0xffffffff) {
  435                         if (GET32(meta, pdr->entry[i].PD_Reference) == PD_Reference)
  436                                 return (i);
  437                 } else
  438                         if (isff(meta->pdr->entry[i].PD_GUID, 24))
  439                                 return (i);
  440         }
  441         if (GUID == NULL && PD_Reference == 0xffffffff) {
  442                 if (i >= GET16(meta, pdr->Max_PDE_Supported))
  443                         return (-1);
  444                 SET16(meta, pdr->Populated_PDEs, i + 1);
  445                 return (i);
  446         }
  447         return (-1);
  448 }
  449 
  450 static int
  451 ddf_meta_find_vd(struct ddf_meta *meta, uint8_t *GUID)
  452 {
  453         int i;
  454 
  455         for (i = 0; i < GET16(meta, vdr->Populated_VDEs); i++) {
  456                 if (GUID != NULL) {
  457                         if (memcmp(meta->vdr->entry[i].VD_GUID, GUID, 24) == 0)
  458                                 return (i);
  459                 } else
  460                         if (isff(meta->vdr->entry[i].VD_GUID, 24))
  461                                 return (i);
  462         }
  463         if (GUID == NULL) {
  464                 if (i >= GET16(meta, vdr->Max_VDE_Supported))
  465                         return (-1);
  466                 SET16(meta, vdr->Populated_VDEs, i + 1);
  467                 return (i);
  468         }
  469         return (-1);
  470 }
  471 
  472 static struct ddf_vdc_record *
  473 ddf_meta_find_vdc(struct ddf_meta *meta, uint8_t *GUID)
  474 {
  475         struct ddf_vdc_record *vdc;
  476         int i, num;
  477 
  478         num = GETCRNUM(meta);
  479         for (i = 0; i < num; i++) {
  480                 vdc = GETVDCPTR(meta, i);
  481                 if (GUID != NULL) {
  482                         if (GET32D(meta, vdc->Signature) == DDF_VDCR_SIGNATURE &&
  483                             memcmp(vdc->VD_GUID, GUID, 24) == 0)
  484                                 return (vdc);
  485                 } else
  486                         if (GET32D(meta, vdc->Signature) == 0xffffffff ||
  487                             GET32D(meta, vdc->Signature) == 0)
  488                                 return (vdc);
  489         }
  490         return (NULL);
  491 }
  492 
  493 static int
  494 ddf_meta_count_vdc(struct ddf_meta *meta, uint8_t *GUID)
  495 {
  496         struct ddf_vdc_record *vdc;
  497         int i, num, cnt;
  498 
  499         cnt = 0;
  500         num = GETCRNUM(meta);
  501         for (i = 0; i < num; i++) {
  502                 vdc = GETVDCPTR(meta, i);
  503                 if (GET32D(meta, vdc->Signature) != DDF_VDCR_SIGNATURE)
  504                         continue;
  505                 if (GUID == NULL || memcmp(vdc->VD_GUID, GUID, 24) == 0)
  506                         cnt++;
  507         }
  508         return (cnt);
  509 }
  510 
  511 static int
  512 ddf_meta_find_disk(struct ddf_vol_meta *vmeta, uint32_t PD_Reference,
  513     int *bvdp, int *posp)
  514 {
  515         int i, bvd, pos;
  516 
  517         i = 0;
  518         for (bvd = 0; bvd < GET16(vmeta, vdc->Secondary_Element_Count); bvd++) {
  519                 if (vmeta->bvdc[bvd] == NULL) {
  520                         i += GET16(vmeta, vdc->Primary_Element_Count); // XXX
  521                         continue;
  522                 }
  523                 for (pos = 0; pos < GET16(vmeta, bvdc[bvd]->Primary_Element_Count);
  524                     pos++, i++) {
  525                         if (GET32(vmeta, bvdc[bvd]->Physical_Disk_Sequence[pos]) ==
  526                             PD_Reference) {
  527                                 if (bvdp != NULL)
  528                                         *bvdp = bvd;
  529                                 if (posp != NULL)
  530                                         *posp = pos;
  531                                 return (i);
  532                         }
  533                 }
  534         }
  535         return (-1);
  536 }
  537 
  538 static struct ddf_sa_record *
  539 ddf_meta_find_sa(struct ddf_meta *meta, int create)
  540 {
  541         struct ddf_sa_record *sa;
  542         int i, num;
  543 
  544         num = GETCRNUM(meta);
  545         for (i = 0; i < num; i++) {
  546                 sa = GETSAPTR(meta, i);
  547                 if (GET32D(meta, sa->Signature) == DDF_SA_SIGNATURE)
  548                         return (sa);
  549         }
  550         if (create) {
  551                 for (i = 0; i < num; i++) {
  552                         sa = GETSAPTR(meta, i);
  553                         if (GET32D(meta, sa->Signature) == 0xffffffff ||
  554                             GET32D(meta, sa->Signature) == 0)
  555                                 return (sa);
  556                 }
  557         }
  558         return (NULL);
  559 }
  560 
  561 static void
  562 ddf_meta_create(struct g_raid_disk *disk, struct ddf_meta *sample)
  563 {
  564         struct timespec ts;
  565         struct clocktime ct;
  566         struct g_raid_md_ddf_perdisk *pd;
  567         struct g_raid_md_ddf_object *mdi;
  568         struct ddf_meta *meta;
  569         struct ddf_pd_entry *pde;
  570         off_t anchorlba;
  571         u_int ss, pos, size;
  572         int len, error;
  573         char serial_buffer[24];
  574 
  575         if (sample->hdr == NULL)
  576                 sample = NULL;
  577 
  578         mdi = (struct g_raid_md_ddf_object *)disk->d_softc->sc_md;
  579         pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
  580         meta = &pd->pd_meta;
  581         ss = disk->d_consumer->provider->sectorsize;
  582         anchorlba = disk->d_consumer->provider->mediasize / ss - 1;
  583 
  584         meta->sectorsize = ss;
  585         meta->bigendian = sample ? sample->bigendian : mdi->mdio_bigendian;
  586         getnanotime(&ts);
  587         clock_ts_to_ct(&ts, &ct);
  588 
  589         /* Header */
  590         meta->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
  591         memset(meta->hdr, 0xff, ss);
  592         if (sample) {
  593                 memcpy(meta->hdr, sample->hdr, sizeof(struct ddf_header));
  594                 if (ss != sample->sectorsize) {
  595                         SET32(meta, hdr->WorkSpace_Length,
  596                             (GET32(sample, hdr->WorkSpace_Length) *
  597                             sample->sectorsize + ss - 1) / ss);
  598                         SET16(meta, hdr->Configuration_Record_Length,
  599                             (GET16(sample, hdr->Configuration_Record_Length) *
  600                             sample->sectorsize + ss - 1) / ss);
  601                         SET32(meta, hdr->cd_length,
  602                             (GET32(sample, hdr->cd_length) *
  603                             sample->sectorsize + ss - 1) / ss);
  604                         SET32(meta, hdr->pdr_length,
  605                             (GET32(sample, hdr->pdr_length) *
  606                             sample->sectorsize + ss - 1) / ss);
  607                         SET32(meta, hdr->vdr_length,
  608                             (GET32(sample, hdr->vdr_length) *
  609                             sample->sectorsize + ss - 1) / ss);
  610                         SET32(meta, hdr->cr_length,
  611                             (GET32(sample, hdr->cr_length) *
  612                             sample->sectorsize + ss - 1) / ss);
  613                         SET32(meta, hdr->pdd_length,
  614                             (GET32(sample, hdr->pdd_length) *
  615                             sample->sectorsize + ss - 1) / ss);
  616                         SET32(meta, hdr->bbmlog_length,
  617                             (GET32(sample, hdr->bbmlog_length) *
  618                             sample->sectorsize + ss - 1) / ss);
  619                         SET32(meta, hdr->Diagnostic_Space,
  620                             (GET32(sample, hdr->bbmlog_length) *
  621                             sample->sectorsize + ss - 1) / ss);
  622                         SET32(meta, hdr->Vendor_Specific_Logs,
  623                             (GET32(sample, hdr->bbmlog_length) *
  624                             sample->sectorsize + ss - 1) / ss);
  625                 }
  626         } else {
  627                 SET32(meta, hdr->Signature, DDF_HEADER_SIGNATURE);
  628                 snprintf(meta->hdr->DDF_Header_GUID, 25, "FreeBSD %08x%08x",
  629                     (u_int)(ts.tv_sec - DECADE), arc4random());
  630                 memcpy(meta->hdr->DDF_rev, "02.00.00", 8);
  631                 SET32(meta, hdr->TimeStamp, (ts.tv_sec - DECADE));
  632                 SET32(meta, hdr->WorkSpace_Length, 16 * 1024 * 1024 / ss);
  633                 SET16(meta, hdr->Max_PD_Entries, DDF_MAX_DISKS - 1);
  634                 SET16(meta, hdr->Max_VD_Entries, DDF_MAX_VDISKS);
  635                 SET16(meta, hdr->Max_Partitions, DDF_MAX_PARTITIONS);
  636                 SET16(meta, hdr->Max_Primary_Element_Entries, DDF_MAX_DISKS);
  637                 SET16(meta, hdr->Configuration_Record_Length,
  638                     (sizeof(struct ddf_vdc_record) +
  639                      (4 + 8) * GET16(meta, hdr->Max_Primary_Element_Entries) +
  640                      ss - 1) / ss);
  641                 SET32(meta, hdr->cd_length,
  642                     (sizeof(struct ddf_cd_record) + ss - 1) / ss);
  643                 SET32(meta, hdr->pdr_length,
  644                     (sizeof(struct ddf_pd_record) +
  645                      sizeof(struct ddf_pd_entry) *
  646                      GET16(meta, hdr->Max_PD_Entries) + ss - 1) / ss);
  647                 SET32(meta, hdr->vdr_length,
  648                     (sizeof(struct ddf_vd_record) +
  649                      sizeof(struct ddf_vd_entry) *
  650                      GET16(meta, hdr->Max_VD_Entries) + ss - 1) / ss);
  651                 SET32(meta, hdr->cr_length,
  652                     GET16(meta, hdr->Configuration_Record_Length) *
  653                     (GET16(meta, hdr->Max_Partitions) + 1));
  654                 SET32(meta, hdr->pdd_length,
  655                     (sizeof(struct ddf_pdd_record) + ss - 1) / ss);
  656                 SET32(meta, hdr->bbmlog_length, 0);
  657                 SET32(meta, hdr->Diagnostic_Space_Length, 0);
  658                 SET32(meta, hdr->Vendor_Specific_Logs_Length, 0);
  659         }
  660         pos = 1;
  661         SET32(meta, hdr->cd_section, pos);
  662         pos += GET32(meta, hdr->cd_length);
  663         SET32(meta, hdr->pdr_section, pos);
  664         pos += GET32(meta, hdr->pdr_length);
  665         SET32(meta, hdr->vdr_section, pos);
  666         pos += GET32(meta, hdr->vdr_length);
  667         SET32(meta, hdr->cr_section, pos);
  668         pos += GET32(meta, hdr->cr_length);
  669         SET32(meta, hdr->pdd_section, pos);
  670         pos += GET32(meta, hdr->pdd_length);
  671         SET32(meta, hdr->bbmlog_section,
  672             GET32(meta, hdr->bbmlog_length) != 0 ? pos : 0xffffffff);
  673         pos += GET32(meta, hdr->bbmlog_length);
  674         SET32(meta, hdr->Diagnostic_Space,
  675             GET32(meta, hdr->Diagnostic_Space_Length) != 0 ? pos : 0xffffffff);
  676         pos += GET32(meta, hdr->Diagnostic_Space_Length);
  677         SET32(meta, hdr->Vendor_Specific_Logs,
  678             GET32(meta, hdr->Vendor_Specific_Logs_Length) != 0 ? pos : 0xffffffff);
  679         pos += min(GET32(meta, hdr->Vendor_Specific_Logs_Length), 1);
  680         SET64(meta, hdr->Primary_Header_LBA,
  681             anchorlba - pos);
  682         SET64(meta, hdr->Secondary_Header_LBA,
  683             0xffffffffffffffffULL);
  684         SET64(meta, hdr->WorkSpace_LBA,
  685             anchorlba + 1 - 32 * 1024 * 1024 / ss);
  686 
  687         /* Controller Data */
  688         size = GET32(meta, hdr->cd_length) * ss;
  689         meta->cdr = malloc(size, M_MD_DDF, M_WAITOK);
  690         memset(meta->cdr, 0xff, size);
  691         SET32(meta, cdr->Signature, DDF_CONTROLLER_DATA_SIGNATURE);
  692         memcpy(meta->cdr->Controller_GUID, "FreeBSD GEOM RAID SERIAL", 24);
  693         memcpy(meta->cdr->Product_ID, "FreeBSD GEOMRAID", 16);
  694 
  695         /* Physical Drive Records. */
  696         size = GET32(meta, hdr->pdr_length) * ss;
  697         meta->pdr = malloc(size, M_MD_DDF, M_WAITOK);
  698         memset(meta->pdr, 0xff, size);
  699         SET32(meta, pdr->Signature, DDF_PDR_SIGNATURE);
  700         SET16(meta, pdr->Populated_PDEs, 1);
  701         SET16(meta, pdr->Max_PDE_Supported,
  702             GET16(meta, hdr->Max_PD_Entries));
  703 
  704         pde = &meta->pdr->entry[0];
  705         len = sizeof(serial_buffer);
  706         error = g_io_getattr("GEOM::ident", disk->d_consumer, &len, serial_buffer);
  707         if (error == 0 && (len = strlen (serial_buffer)) >= 6 && len <= 20)
  708                 snprintf(pde->PD_GUID, 25, "DISK%20s", serial_buffer);
  709         else
  710                 snprintf(pde->PD_GUID, 25, "DISK%04d%02d%02d%08x%04x",
  711                     ct.year, ct.mon, ct.day,
  712                     arc4random(), arc4random() & 0xffff);
  713         SET32D(meta, pde->PD_Reference, arc4random());
  714         SET16D(meta, pde->PD_Type, DDF_PDE_GUID_FORCE);
  715         SET16D(meta, pde->PD_State, 0);
  716         SET64D(meta, pde->Configured_Size,
  717             anchorlba + 1 - 32 * 1024 * 1024 / ss);
  718         SET16D(meta, pde->Block_Size, ss);
  719 
  720         /* Virtual Drive Records. */
  721         size = GET32(meta, hdr->vdr_length) * ss;
  722         meta->vdr = malloc(size, M_MD_DDF, M_WAITOK);
  723         memset(meta->vdr, 0xff, size);
  724         SET32(meta, vdr->Signature, DDF_VD_RECORD_SIGNATURE);
  725         SET32(meta, vdr->Populated_VDEs, 0);
  726         SET16(meta, vdr->Max_VDE_Supported,
  727             GET16(meta, hdr->Max_VD_Entries));
  728 
  729         /* Configuration Records. */
  730         size = GET32(meta, hdr->cr_length) * ss;
  731         meta->cr = malloc(size, M_MD_DDF, M_WAITOK);
  732         memset(meta->cr, 0xff, size);
  733 
  734         /* Physical Disk Data. */
  735         size = GET32(meta, hdr->pdd_length) * ss;
  736         meta->pdd = malloc(size, M_MD_DDF, M_WAITOK);
  737         memset(meta->pdd, 0xff, size);
  738         SET32(meta, pdd->Signature, DDF_PDD_SIGNATURE);
  739         memcpy(meta->pdd->PD_GUID, pde->PD_GUID, 24);
  740         SET32(meta, pdd->PD_Reference, GET32D(meta, pde->PD_Reference));
  741         SET8(meta, pdd->Forced_Ref_Flag, DDF_PDD_FORCED_REF);
  742         SET8(meta, pdd->Forced_PD_GUID_Flag, DDF_PDD_FORCED_GUID);
  743 
  744         /* Bad Block Management Log. */
  745         if (GET32(meta, hdr->bbmlog_length) != 0) {
  746                 size = GET32(meta, hdr->bbmlog_length) * ss;
  747                 meta->bbm = malloc(size, M_MD_DDF, M_WAITOK);
  748                 memset(meta->bbm, 0xff, size);
  749                 SET32(meta, bbm->Signature, DDF_BBML_SIGNATURE);
  750                 SET32(meta, bbm->Entry_Count, 0);
  751                 SET32(meta, bbm->Spare_Block_Count, 0);
  752         }
  753 }
  754 
  755 static void
  756 ddf_meta_copy(struct ddf_meta *dst, struct ddf_meta *src)
  757 {
  758         struct ddf_header *hdr;
  759         u_int ss;
  760 
  761         hdr = src->hdr;
  762         dst->bigendian = src->bigendian;
  763         ss = dst->sectorsize = src->sectorsize;
  764         dst->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
  765         memcpy(dst->hdr, src->hdr, ss);
  766         dst->cdr = malloc(GET32(src, hdr->cd_length) * ss, M_MD_DDF, M_WAITOK);
  767         memcpy(dst->cdr, src->cdr, GET32(src, hdr->cd_length) * ss);
  768         dst->pdr = malloc(GET32(src, hdr->pdr_length) * ss, M_MD_DDF, M_WAITOK);
  769         memcpy(dst->pdr, src->pdr, GET32(src, hdr->pdr_length) * ss);
  770         dst->vdr = malloc(GET32(src, hdr->vdr_length) * ss, M_MD_DDF, M_WAITOK);
  771         memcpy(dst->vdr, src->vdr, GET32(src, hdr->vdr_length) * ss);
  772         dst->cr = malloc(GET32(src, hdr->cr_length) * ss, M_MD_DDF, M_WAITOK);
  773         memcpy(dst->cr, src->cr, GET32(src, hdr->cr_length) * ss);
  774         dst->pdd = malloc(GET32(src, hdr->pdd_length) * ss, M_MD_DDF, M_WAITOK);
  775         memcpy(dst->pdd, src->pdd, GET32(src, hdr->pdd_length) * ss);
  776         if (src->bbm != NULL) {
  777                 dst->bbm = malloc(GET32(src, hdr->bbmlog_length) * ss, M_MD_DDF, M_WAITOK);
  778                 memcpy(dst->bbm, src->bbm, GET32(src, hdr->bbmlog_length) * ss);
  779         }
  780 }
  781 
  782 static void
  783 ddf_meta_update(struct ddf_meta *meta, struct ddf_meta *src)
  784 {
  785         struct ddf_pd_entry *pde, *spde;
  786         int i, j;
  787 
  788         for (i = 0; i < GET16(src, pdr->Populated_PDEs); i++) {
  789                 spde = &src->pdr->entry[i];
  790                 if (isff(spde->PD_GUID, 24))
  791                         continue;
  792                 j = ddf_meta_find_pd(meta, NULL,
  793                     GET32(src, pdr->entry[i].PD_Reference));
  794                 if (j < 0) {
  795                         j = ddf_meta_find_pd(meta, NULL, 0xffffffff);
  796                         pde = &meta->pdr->entry[j];
  797                         memcpy(pde, spde, sizeof(*pde));
  798                 } else {
  799                         pde = &meta->pdr->entry[j];
  800                         SET16D(meta, pde->PD_State,
  801                             GET16D(meta, pde->PD_State) |
  802                             GET16D(src, pde->PD_State));
  803                 }
  804         }
  805 }
  806 
  807 static void
  808 ddf_meta_free(struct ddf_meta *meta)
  809 {
  810 
  811         if (meta->hdr != NULL) {
  812                 free(meta->hdr, M_MD_DDF);
  813                 meta->hdr = NULL;
  814         }
  815         if (meta->cdr != NULL) {
  816                 free(meta->cdr, M_MD_DDF);
  817                 meta->cdr = NULL;
  818         }
  819         if (meta->pdr != NULL) {
  820                 free(meta->pdr, M_MD_DDF);
  821                 meta->pdr = NULL;
  822         }
  823         if (meta->vdr != NULL) {
  824                 free(meta->vdr, M_MD_DDF);
  825                 meta->vdr = NULL;
  826         }
  827         if (meta->cr != NULL) {
  828                 free(meta->cr, M_MD_DDF);
  829                 meta->cr = NULL;
  830         }
  831         if (meta->pdd != NULL) {
  832                 free(meta->pdd, M_MD_DDF);
  833                 meta->pdd = NULL;
  834         }
  835         if (meta->bbm != NULL) {
  836                 free(meta->bbm, M_MD_DDF);
  837                 meta->bbm = NULL;
  838         }
  839 }
  840 
  841 static void
  842 ddf_vol_meta_create(struct ddf_vol_meta *meta, struct ddf_meta *sample)
  843 {
  844         struct timespec ts;
  845         struct clocktime ct;
  846         struct ddf_header *hdr;
  847         u_int ss, size;
  848 
  849         hdr = sample->hdr;
  850         meta->bigendian = sample->bigendian;
  851         ss = meta->sectorsize = sample->sectorsize;
  852         meta->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
  853         memcpy(meta->hdr, sample->hdr, ss);
  854         meta->cdr = malloc(GET32(sample, hdr->cd_length) * ss, M_MD_DDF, M_WAITOK);
  855         memcpy(meta->cdr, sample->cdr, GET32(sample, hdr->cd_length) * ss);
  856         meta->vde = malloc(sizeof(struct ddf_vd_entry), M_MD_DDF, M_WAITOK);
  857         memset(meta->vde, 0xff, sizeof(struct ddf_vd_entry));
  858         getnanotime(&ts);
  859         clock_ts_to_ct(&ts, &ct);
  860         snprintf(meta->vde->VD_GUID, 25, "FreeBSD%04d%02d%02d%08x%01x",
  861             ct.year, ct.mon, ct.day,
  862             arc4random(), arc4random() & 0xf);
  863         size = GET16(sample, hdr->Configuration_Record_Length) * ss;
  864         meta->vdc = malloc(size, M_MD_DDF, M_WAITOK);
  865         memset(meta->vdc, 0xff, size);
  866         SET32(meta, vdc->Signature, DDF_VDCR_SIGNATURE);
  867         memcpy(meta->vdc->VD_GUID, meta->vde->VD_GUID, 24);
  868         SET32(meta, vdc->Sequence_Number, 0);
  869 }
  870 
  871 static void
  872 ddf_vol_meta_update(struct ddf_vol_meta *dst, struct ddf_meta *src,
  873     uint8_t *GUID, int started)
  874 {
  875         struct ddf_header *hdr;
  876         struct ddf_vd_entry *vde;
  877         struct ddf_vdc_record *vdc;
  878         int vnew, bvnew, bvd, size;
  879         u_int ss;
  880 
  881         hdr = src->hdr;
  882         vde = &src->vdr->entry[ddf_meta_find_vd(src, GUID)];
  883         vdc = ddf_meta_find_vdc(src, GUID);
  884         bvd = GET8D(src, vdc->Secondary_Element_Seq);
  885         size = GET16(src, hdr->Configuration_Record_Length) * src->sectorsize;
  886 
  887         if (dst->vdc == NULL ||
  888             (!started && ((int32_t)(GET32D(src, vdc->Sequence_Number) -
  889             GET32(dst, vdc->Sequence_Number))) > 0))
  890                 vnew = 1;
  891         else
  892                 vnew = 0;
  893 
  894         if (dst->bvdc[bvd] == NULL ||
  895             (!started && ((int32_t)(GET32D(src, vdc->Sequence_Number) -
  896             GET32(dst, bvdc[bvd]->Sequence_Number))) > 0))
  897                 bvnew = 1;
  898         else
  899                 bvnew = 0;
  900 
  901         if (vnew) {
  902                 dst->bigendian = src->bigendian;
  903                 ss = dst->sectorsize = src->sectorsize;
  904                 if (dst->hdr != NULL)
  905                         free(dst->hdr, M_MD_DDF);
  906                 dst->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
  907                 memcpy(dst->hdr, src->hdr, ss);
  908                 if (dst->cdr != NULL)
  909                         free(dst->cdr, M_MD_DDF);
  910                 dst->cdr = malloc(GET32(src, hdr->cd_length) * ss, M_MD_DDF, M_WAITOK);
  911                 memcpy(dst->cdr, src->cdr, GET32(src, hdr->cd_length) * ss);
  912                 if (dst->vde != NULL)
  913                         free(dst->vde, M_MD_DDF);
  914                 dst->vde = malloc(sizeof(struct ddf_vd_entry), M_MD_DDF, M_WAITOK);
  915                 memcpy(dst->vde, vde, sizeof(struct ddf_vd_entry));
  916                 if (dst->vdc != NULL)
  917                         free(dst->vdc, M_MD_DDF);
  918                 dst->vdc = malloc(size, M_MD_DDF, M_WAITOK);
  919                 memcpy(dst->vdc, vdc, size);
  920         }
  921         if (bvnew) {
  922                 if (dst->bvdc[bvd] != NULL)
  923                         free(dst->bvdc[bvd], M_MD_DDF);
  924                 dst->bvdc[bvd] = malloc(size, M_MD_DDF, M_WAITOK);
  925                 memcpy(dst->bvdc[bvd], vdc, size);
  926         }
  927 }
  928 
  929 static void
  930 ddf_vol_meta_free(struct ddf_vol_meta *meta)
  931 {
  932         int i;
  933 
  934         if (meta->hdr != NULL) {
  935                 free(meta->hdr, M_MD_DDF);
  936                 meta->hdr = NULL;
  937         }
  938         if (meta->cdr != NULL) {
  939                 free(meta->cdr, M_MD_DDF);
  940                 meta->cdr = NULL;
  941         }
  942         if (meta->vde != NULL) {
  943                 free(meta->vde, M_MD_DDF);
  944                 meta->vde = NULL;
  945         }
  946         if (meta->vdc != NULL) {
  947                 free(meta->vdc, M_MD_DDF);
  948                 meta->vdc = NULL;
  949         }
  950         for (i = 0; i < DDF_MAX_DISKS_HARD; i++) {
  951                 if (meta->bvdc[i] != NULL) {
  952                         free(meta->bvdc[i], M_MD_DDF);
  953                         meta->bvdc[i] = NULL;
  954                 }
  955         }
  956 }
  957 
  958 static int
  959 ddf_meta_unused_range(struct ddf_meta *meta, off_t *off, off_t *size)
  960 {
  961         struct ddf_vdc_record *vdc;
  962         off_t beg[32], end[32], beg1, end1;
  963         uint64_t *offp;
  964         int i, j, n, num, pos;
  965         uint32_t ref;
  966 
  967         *off = 0;
  968         *size = 0;
  969         ref = GET32(meta, pdd->PD_Reference);
  970         pos = ddf_meta_find_pd(meta, NULL, ref);
  971         beg[0] = 0;
  972         end[0] = GET64(meta, pdr->entry[pos].Configured_Size);
  973         n = 1;
  974         num = GETCRNUM(meta);
  975         for (i = 0; i < num; i++) {
  976                 vdc = GETVDCPTR(meta, i);
  977                 if (GET32D(meta, vdc->Signature) != DDF_VDCR_SIGNATURE)
  978                         continue;
  979                 for (pos = 0; pos < GET16D(meta, vdc->Primary_Element_Count); pos++)
  980                         if (GET32D(meta, vdc->Physical_Disk_Sequence[pos]) == ref)
  981                                 break;
  982                 if (pos == GET16D(meta, vdc->Primary_Element_Count))
  983                         continue;
  984                 offp = (uint64_t *)&(vdc->Physical_Disk_Sequence[
  985                     GET16(meta, hdr->Max_Primary_Element_Entries)]);
  986                 beg1 = GET64P(meta, offp + pos);
  987                 end1 = beg1 + GET64D(meta, vdc->Block_Count);
  988                 for (j = 0; j < n; j++) {
  989                         if (beg[j] >= end1 || end[j] <= beg1 )
  990                                 continue;
  991                         if (beg[j] < beg1 && end[j] > end1) {
  992                                 beg[n] = end1;
  993                                 end[n] = end[j];
  994                                 end[j] = beg1;
  995                                 n++;
  996                         } else if (beg[j] < beg1)
  997                                 end[j] = beg1;
  998                         else
  999                                 beg[j] = end1;
 1000                 }
 1001         }
 1002         for (j = 0; j < n; j++) {
 1003                 if (end[j] - beg[j] > *size) {
 1004                         *off = beg[j];
 1005                         *size = end[j] - beg[j];
 1006                 }
 1007         }
 1008         return ((*size > 0) ? 1 : 0);
 1009 }
 1010 
 1011 static void
 1012 ddf_meta_get_name(struct ddf_meta *meta, int num, char *buf)
 1013 {
 1014         const char *b;
 1015         int i;
 1016 
 1017         b = meta->vdr->entry[num].VD_Name;
 1018         for (i = 15; i >= 0; i--)
 1019                 if (b[i] != 0x20)
 1020                         break;
 1021         memcpy(buf, b, i + 1);
 1022         buf[i + 1] = 0;
 1023 }
 1024 
 1025 static void
 1026 ddf_meta_put_name(struct ddf_vol_meta *meta, char *buf)
 1027 {
 1028         int len;
 1029 
 1030         len = min(strlen(buf), 16);
 1031         memset(meta->vde->VD_Name, 0x20, 16);
 1032         memcpy(meta->vde->VD_Name, buf, len);
 1033 }
 1034 
 1035 static int
 1036 ddf_meta_read(struct g_consumer *cp, struct ddf_meta *meta)
 1037 {
 1038         struct g_provider *pp;
 1039         struct ddf_header *ahdr, *hdr;
 1040         char *abuf, *buf;
 1041         off_t plba, slba, lba;
 1042         int error, len, i;
 1043         u_int ss;
 1044         uint32_t val;
 1045 
 1046         ddf_meta_free(meta);
 1047         pp = cp->provider;
 1048         ss = meta->sectorsize = pp->sectorsize;
 1049         /* Read anchor block. */
 1050         abuf = g_read_data(cp, pp->mediasize - ss, ss, &error);
 1051         if (abuf == NULL) {
 1052                 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).",
 1053                     pp->name, error);
 1054                 return (error);
 1055         }
 1056         ahdr = (struct ddf_header *)abuf;
 1057 
 1058         /* Check if this is an DDF RAID struct */
 1059         if (be32dec(&ahdr->Signature) == DDF_HEADER_SIGNATURE)
 1060                 meta->bigendian = 1;
 1061         else if (le32dec(&ahdr->Signature) == DDF_HEADER_SIGNATURE)
 1062                 meta->bigendian = 0;
 1063         else {
 1064                 G_RAID_DEBUG(1, "DDF signature check failed on %s", pp->name);
 1065                 error = EINVAL;
 1066                 goto done;
 1067         }
 1068         if (ahdr->Header_Type != DDF_HEADER_ANCHOR) {
 1069                 G_RAID_DEBUG(1, "DDF header type check failed on %s", pp->name);
 1070                 error = EINVAL;
 1071                 goto done;
 1072         }
 1073         meta->hdr = ahdr;
 1074         plba = GET64(meta, hdr->Primary_Header_LBA);
 1075         slba = GET64(meta, hdr->Secondary_Header_LBA);
 1076         val = GET32(meta, hdr->CRC);
 1077         SET32(meta, hdr->CRC, 0xffffffff);
 1078         meta->hdr = NULL;
 1079         if (crc32(ahdr, ss) != val) {
 1080                 G_RAID_DEBUG(1, "DDF CRC mismatch on %s", pp->name);
 1081                 error = EINVAL;
 1082                 goto done;
 1083         }
 1084         if ((plba + 6) * ss >= pp->mediasize) {
 1085                 G_RAID_DEBUG(1, "DDF primary header LBA is wrong on %s", pp->name);
 1086                 error = EINVAL;
 1087                 goto done;
 1088         }
 1089         if (slba != -1 && (slba + 6) * ss >= pp->mediasize) {
 1090                 G_RAID_DEBUG(1, "DDF secondary header LBA is wrong on %s", pp->name);
 1091                 error = EINVAL;
 1092                 goto done;
 1093         }
 1094         lba = plba;
 1095 
 1096 doread:
 1097         error = 0;
 1098         ddf_meta_free(meta);
 1099 
 1100         /* Read header block. */
 1101         buf = g_read_data(cp, lba * ss, ss, &error);
 1102         if (buf == NULL) {
 1103 readerror:
 1104                 G_RAID_DEBUG(1, "DDF %s metadata read error on %s (error=%d).",
 1105                     (lba == plba) ? "primary" : "secondary", pp->name, error);
 1106                 if (lba == plba && slba != -1) {
 1107                         lba = slba;
 1108                         goto doread;
 1109                 }
 1110                 G_RAID_DEBUG(1, "DDF metadata read error on %s.", pp->name);
 1111                 goto done;
 1112         }
 1113         meta->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
 1114         memcpy(meta->hdr, buf, ss);
 1115         g_free(buf);
 1116         hdr = meta->hdr;
 1117         val = GET32(meta, hdr->CRC);
 1118         SET32(meta, hdr->CRC, 0xffffffff);
 1119         if (hdr->Signature != ahdr->Signature ||
 1120             crc32(meta->hdr, ss) != val ||
 1121             memcmp(hdr->DDF_Header_GUID, ahdr->DDF_Header_GUID, 24) ||
 1122             GET64(meta, hdr->Primary_Header_LBA) != plba ||
 1123             GET64(meta, hdr->Secondary_Header_LBA) != slba) {
 1124 hdrerror:
 1125                 G_RAID_DEBUG(1, "DDF %s metadata check failed on %s",
 1126                     (lba == plba) ? "primary" : "secondary", pp->name);
 1127                 if (lba == plba && slba != -1) {
 1128                         lba = slba;
 1129                         goto doread;
 1130                 }
 1131                 G_RAID_DEBUG(1, "DDF metadata check failed on %s", pp->name);
 1132                 error = EINVAL;
 1133                 goto done;
 1134         }
 1135         if ((lba == plba && hdr->Header_Type != DDF_HEADER_PRIMARY) ||
 1136             (lba == slba && hdr->Header_Type != DDF_HEADER_SECONDARY))
 1137                 goto hdrerror;
 1138         len = 1;
 1139         len = max(len, GET32(meta, hdr->cd_section) + GET32(meta, hdr->cd_length));
 1140         len = max(len, GET32(meta, hdr->pdr_section) + GET32(meta, hdr->pdr_length));
 1141         len = max(len, GET32(meta, hdr->vdr_section) + GET32(meta, hdr->vdr_length));
 1142         len = max(len, GET32(meta, hdr->cr_section) + GET32(meta, hdr->cr_length));
 1143         len = max(len, GET32(meta, hdr->pdd_section) + GET32(meta, hdr->pdd_length));
 1144         if ((val = GET32(meta, hdr->bbmlog_section)) != 0xffffffff)
 1145                 len = max(len, val + GET32(meta, hdr->bbmlog_length));
 1146         if ((val = GET32(meta, hdr->Diagnostic_Space)) != 0xffffffff)
 1147                 len = max(len, val + GET32(meta, hdr->Diagnostic_Space_Length));
 1148         if ((val = GET32(meta, hdr->Vendor_Specific_Logs)) != 0xffffffff)
 1149                 len = max(len, val + GET32(meta, hdr->Vendor_Specific_Logs_Length));
 1150         if ((plba + len) * ss >= pp->mediasize)
 1151                 goto hdrerror;
 1152         if (slba != -1 && (slba + len) * ss >= pp->mediasize)
 1153                 goto hdrerror;
 1154         /* Workaround for Adaptec implementation. */
 1155         if (GET16(meta, hdr->Max_Primary_Element_Entries) == 0xffff) {
 1156                 SET16(meta, hdr->Max_Primary_Element_Entries,
 1157                     min(GET16(meta, hdr->Max_PD_Entries),
 1158                     (GET16(meta, hdr->Configuration_Record_Length) * ss - 512) / 12));
 1159         }
 1160 
 1161         /* Read controller data. */
 1162         buf = g_read_data(cp, (lba + GET32(meta, hdr->cd_section)) * ss,
 1163             GET32(meta, hdr->cd_length) * ss, &error);
 1164         if (buf == NULL)
 1165                 goto readerror;
 1166         meta->cdr = malloc(GET32(meta, hdr->cd_length) * ss, M_MD_DDF, M_WAITOK);
 1167         memcpy(meta->cdr, buf, GET32(meta, hdr->cd_length) * ss);
 1168         g_free(buf);
 1169         if (GET32(meta, cdr->Signature) != DDF_CONTROLLER_DATA_SIGNATURE)
 1170                 goto hdrerror;
 1171 
 1172         /* Read physical disk records. */
 1173         buf = g_read_data(cp, (lba + GET32(meta, hdr->pdr_section)) * ss,
 1174             GET32(meta, hdr->pdr_length) * ss, &error);
 1175         if (buf == NULL)
 1176                 goto readerror;
 1177         meta->pdr = malloc(GET32(meta, hdr->pdr_length) * ss, M_MD_DDF, M_WAITOK);
 1178         memcpy(meta->pdr, buf, GET32(meta, hdr->pdr_length) * ss);
 1179         g_free(buf);
 1180         if (GET32(meta, pdr->Signature) != DDF_PDR_SIGNATURE)
 1181                 goto hdrerror;
 1182 
 1183         /* Read virtual disk records. */
 1184         buf = g_read_data(cp, (lba + GET32(meta, hdr->vdr_section)) * ss,
 1185             GET32(meta, hdr->vdr_length) * ss, &error);
 1186         if (buf == NULL)
 1187                 goto readerror;
 1188         meta->vdr = malloc(GET32(meta, hdr->vdr_length) * ss, M_MD_DDF, M_WAITOK);
 1189         memcpy(meta->vdr, buf, GET32(meta, hdr->vdr_length) * ss);
 1190         g_free(buf);
 1191         if (GET32(meta, vdr->Signature) != DDF_VD_RECORD_SIGNATURE)
 1192                 goto hdrerror;
 1193 
 1194         /* Read configuration records. */
 1195         buf = g_read_data(cp, (lba + GET32(meta, hdr->cr_section)) * ss,
 1196             GET32(meta, hdr->cr_length) * ss, &error);
 1197         if (buf == NULL)
 1198                 goto readerror;
 1199         meta->cr = malloc(GET32(meta, hdr->cr_length) * ss, M_MD_DDF, M_WAITOK);
 1200         memcpy(meta->cr, buf, GET32(meta, hdr->cr_length) * ss);
 1201         g_free(buf);
 1202 
 1203         /* Read physical disk data. */
 1204         buf = g_read_data(cp, (lba + GET32(meta, hdr->pdd_section)) * ss,
 1205             GET32(meta, hdr->pdd_length) * ss, &error);
 1206         if (buf == NULL)
 1207                 goto readerror;
 1208         meta->pdd = malloc(GET32(meta, hdr->pdd_length) * ss, M_MD_DDF, M_WAITOK);
 1209         memcpy(meta->pdd, buf, GET32(meta, hdr->pdd_length) * ss);
 1210         g_free(buf);
 1211         if (GET32(meta, pdd->Signature) != DDF_PDD_SIGNATURE)
 1212                 goto hdrerror;
 1213         i = ddf_meta_find_pd(meta, NULL, GET32(meta, pdd->PD_Reference));
 1214         if (i < 0)
 1215                 goto hdrerror;
 1216 
 1217         /* Read BBM Log. */
 1218         if (GET32(meta, hdr->bbmlog_section) != 0xffffffff &&
 1219             GET32(meta, hdr->bbmlog_length) != 0) {
 1220                 buf = g_read_data(cp, (lba + GET32(meta, hdr->bbmlog_section)) * ss,
 1221                     GET32(meta, hdr->bbmlog_length) * ss, &error);
 1222                 if (buf == NULL)
 1223                         goto readerror;
 1224                 meta->bbm = malloc(GET32(meta, hdr->bbmlog_length) * ss, M_MD_DDF, M_WAITOK);
 1225                 memcpy(meta->bbm, buf, GET32(meta, hdr->bbmlog_length) * ss);
 1226                 g_free(buf);
 1227                 if (GET32(meta, bbm->Signature) != DDF_BBML_SIGNATURE)
 1228                         goto hdrerror;
 1229         }
 1230 
 1231 done:
 1232         g_free(abuf);
 1233         if (error != 0)
 1234                 ddf_meta_free(meta);
 1235         return (error);
 1236 }
 1237 
 1238 static int
 1239 ddf_meta_write(struct g_consumer *cp, struct ddf_meta *meta)
 1240 {
 1241         struct g_provider *pp;
 1242         struct ddf_vdc_record *vdc;
 1243         off_t alba, plba, slba, lba;
 1244         u_int ss, size;
 1245         int error, i, num;
 1246 
 1247         pp = cp->provider;
 1248         ss = pp->sectorsize;
 1249         lba = alba = pp->mediasize / ss - 1;
 1250         plba = GET64(meta, hdr->Primary_Header_LBA);
 1251         slba = GET64(meta, hdr->Secondary_Header_LBA);
 1252 
 1253 next:
 1254         SET8(meta, hdr->Header_Type, (lba == alba) ? DDF_HEADER_ANCHOR :
 1255             (lba == plba) ? DDF_HEADER_PRIMARY : DDF_HEADER_SECONDARY);
 1256         SET32(meta, hdr->CRC, 0xffffffff);
 1257         SET32(meta, hdr->CRC, crc32(meta->hdr, ss));
 1258         error = g_write_data(cp, lba * ss, meta->hdr, ss);
 1259         if (error != 0) {
 1260 err:
 1261                 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
 1262                     pp->name, error);
 1263                 if (lba != alba)
 1264                         goto done;
 1265         }
 1266         if (lba == alba) {
 1267                 lba = plba;
 1268                 goto next;
 1269         }
 1270 
 1271         size = GET32(meta, hdr->cd_length) * ss;
 1272         SET32(meta, cdr->CRC, 0xffffffff);
 1273         SET32(meta, cdr->CRC, crc32(meta->cdr, size));
 1274         error = g_write_data(cp, (lba + GET32(meta, hdr->cd_section)) * ss,
 1275             meta->cdr, size);
 1276         if (error != 0)
 1277                 goto err;
 1278 
 1279         size = GET32(meta, hdr->pdr_length) * ss;
 1280         SET32(meta, pdr->CRC, 0xffffffff);
 1281         SET32(meta, pdr->CRC, crc32(meta->pdr, size));
 1282         error = g_write_data(cp, (lba + GET32(meta, hdr->pdr_section)) * ss,
 1283             meta->pdr, size);
 1284         if (error != 0)
 1285                 goto err;
 1286 
 1287         size = GET32(meta, hdr->vdr_length) * ss;
 1288         SET32(meta, vdr->CRC, 0xffffffff);
 1289         SET32(meta, vdr->CRC, crc32(meta->vdr, size));
 1290         error = g_write_data(cp, (lba + GET32(meta, hdr->vdr_section)) * ss,
 1291             meta->vdr, size);
 1292         if (error != 0)
 1293                 goto err;
 1294 
 1295         size = GET16(meta, hdr->Configuration_Record_Length) * ss;
 1296         num = GETCRNUM(meta);
 1297         for (i = 0; i < num; i++) {
 1298                 vdc = GETVDCPTR(meta, i);
 1299                 SET32D(meta, vdc->CRC, 0xffffffff);
 1300                 SET32D(meta, vdc->CRC, crc32(vdc, size));
 1301         }
 1302         error = g_write_data(cp, (lba + GET32(meta, hdr->cr_section)) * ss,
 1303             meta->cr, size * num);
 1304         if (error != 0)
 1305                 goto err;
 1306 
 1307         size = GET32(meta, hdr->pdd_length) * ss;
 1308         SET32(meta, pdd->CRC, 0xffffffff);
 1309         SET32(meta, pdd->CRC, crc32(meta->pdd, size));
 1310         error = g_write_data(cp, (lba + GET32(meta, hdr->pdd_section)) * ss,
 1311             meta->pdd, size);
 1312         if (error != 0)
 1313                 goto err;
 1314 
 1315         if (GET32(meta, hdr->bbmlog_length) != 0) {
 1316                 size = GET32(meta, hdr->bbmlog_length) * ss;
 1317                 SET32(meta, bbm->CRC, 0xffffffff);
 1318                 SET32(meta, bbm->CRC, crc32(meta->bbm, size));
 1319                 error = g_write_data(cp,
 1320                     (lba + GET32(meta, hdr->bbmlog_section)) * ss,
 1321                     meta->bbm, size);
 1322                 if (error != 0)
 1323                         goto err;
 1324         }
 1325 
 1326 done:
 1327         if (lba == plba && slba != -1) {
 1328                 lba = slba;
 1329                 goto next;
 1330         }
 1331 
 1332         return (error);
 1333 }
 1334 
 1335 static int
 1336 ddf_meta_erase(struct g_consumer *cp)
 1337 {
 1338         struct g_provider *pp;
 1339         char *buf;
 1340         int error;
 1341 
 1342         pp = cp->provider;
 1343         buf = malloc(pp->sectorsize, M_MD_DDF, M_WAITOK | M_ZERO);
 1344         error = g_write_data(cp, pp->mediasize - pp->sectorsize,
 1345             buf, pp->sectorsize);
 1346         if (error != 0) {
 1347                 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
 1348                     pp->name, error);
 1349         }
 1350         free(buf, M_MD_DDF);
 1351         return (error);
 1352 }
 1353 
 1354 static struct g_raid_volume *
 1355 g_raid_md_ddf_get_volume(struct g_raid_softc *sc, uint8_t *GUID)
 1356 {
 1357         struct g_raid_volume    *vol;
 1358         struct g_raid_md_ddf_pervolume *pv;
 1359 
 1360         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
 1361                 pv = vol->v_md_data;
 1362                 if (memcmp(pv->pv_meta.vde->VD_GUID, GUID, 24) == 0)
 1363                         break;
 1364         }
 1365         return (vol);
 1366 }
 1367 
 1368 static struct g_raid_disk *
 1369 g_raid_md_ddf_get_disk(struct g_raid_softc *sc, uint8_t *GUID, uint32_t id)
 1370 {
 1371         struct g_raid_disk      *disk;
 1372         struct g_raid_md_ddf_perdisk *pd;
 1373         struct ddf_meta *meta;
 1374 
 1375         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 1376                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
 1377                 meta = &pd->pd_meta;
 1378                 if (GUID != NULL) {
 1379                         if (memcmp(meta->pdd->PD_GUID, GUID, 24) == 0)
 1380                                 break;
 1381                 } else {
 1382                         if (GET32(meta, pdd->PD_Reference) == id)
 1383                                 break;
 1384                 }
 1385         }
 1386         return (disk);
 1387 }
 1388 
 1389 static int
 1390 g_raid_md_ddf_purge_volumes(struct g_raid_softc *sc)
 1391 {
 1392         struct g_raid_volume    *vol, *tvol;
 1393         struct g_raid_md_ddf_pervolume *pv;
 1394         int i, res;
 1395 
 1396         res = 0;
 1397         TAILQ_FOREACH_SAFE(vol, &sc->sc_volumes, v_next, tvol) {
 1398                 pv = vol->v_md_data;
 1399                 if (vol->v_stopping)
 1400                         continue;
 1401                 for (i = 0; i < vol->v_disks_count; i++) {
 1402                         if (vol->v_subdisks[i].sd_state != G_RAID_SUBDISK_S_NONE)
 1403                                 break;
 1404                 }
 1405                 if (i >= vol->v_disks_count) {
 1406                         g_raid_destroy_volume(vol);
 1407                         res = 1;
 1408                 }
 1409         }
 1410         return (res);
 1411 }
 1412 
 1413 static int
 1414 g_raid_md_ddf_purge_disks(struct g_raid_softc *sc)
 1415 {
 1416 #if 0
 1417         struct g_raid_disk      *disk, *tdisk;
 1418         struct g_raid_volume    *vol;
 1419         struct g_raid_md_ddf_perdisk *pd;
 1420         int i, j, res;
 1421 
 1422         res = 0;
 1423         TAILQ_FOREACH_SAFE(disk, &sc->sc_disks, d_next, tdisk) {
 1424                 if (disk->d_state == G_RAID_DISK_S_SPARE)
 1425                         continue;
 1426                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
 1427 
 1428                 /* Scan for deleted volumes. */
 1429                 for (i = 0; i < pd->pd_subdisks; ) {
 1430                         vol = g_raid_md_ddf_get_volume(sc,
 1431                             pd->pd_meta[i]->volume_id);
 1432                         if (vol != NULL && !vol->v_stopping) {
 1433                                 i++;
 1434                                 continue;
 1435                         }
 1436                         free(pd->pd_meta[i], M_MD_DDF);
 1437                         for (j = i; j < pd->pd_subdisks - 1; j++)
 1438                                 pd->pd_meta[j] = pd->pd_meta[j + 1];
 1439                         pd->pd_meta[DDF_MAX_SUBDISKS - 1] = NULL;
 1440                         pd->pd_subdisks--;
 1441                         pd->pd_updated = 1;
 1442                 }
 1443 
 1444                 /* If there is no metadata left - erase and delete disk. */
 1445                 if (pd->pd_subdisks == 0) {
 1446                         ddf_meta_erase(disk->d_consumer);
 1447                         g_raid_destroy_disk(disk);
 1448                         res = 1;
 1449                 }
 1450         }
 1451         return (res);
 1452 #endif
 1453         return (0);
 1454 }
 1455 
 1456 static int
 1457 g_raid_md_ddf_supported(int level, int qual, int disks, int force)
 1458 {
 1459 
 1460         if (disks > DDF_MAX_DISKS_HARD)
 1461                 return (0);
 1462         switch (level) {
 1463         case G_RAID_VOLUME_RL_RAID0:
 1464                 if (qual != G_RAID_VOLUME_RLQ_NONE)
 1465                         return (0);
 1466                 if (disks < 1)
 1467                         return (0);
 1468                 if (!force && disks < 2)
 1469                         return (0);
 1470                 break;
 1471         case G_RAID_VOLUME_RL_RAID1:
 1472                 if (disks < 1)
 1473                         return (0);
 1474                 if (qual == G_RAID_VOLUME_RLQ_R1SM) {
 1475                         if (!force && disks != 2)
 1476                                 return (0);
 1477                 } else if (qual == G_RAID_VOLUME_RLQ_R1MM) {
 1478                         if (!force && disks != 3)
 1479                                 return (0);
 1480                 } else 
 1481                         return (0);
 1482                 break;
 1483         case G_RAID_VOLUME_RL_RAID3:
 1484                 if (qual != G_RAID_VOLUME_RLQ_R3P0 &&
 1485                     qual != G_RAID_VOLUME_RLQ_R3PN)
 1486                         return (0);
 1487                 if (disks < 3)
 1488                         return (0);
 1489                 break;
 1490         case G_RAID_VOLUME_RL_RAID4:
 1491                 if (qual != G_RAID_VOLUME_RLQ_R4P0 &&
 1492                     qual != G_RAID_VOLUME_RLQ_R4PN)
 1493                         return (0);
 1494                 if (disks < 3)
 1495                         return (0);
 1496                 break;
 1497         case G_RAID_VOLUME_RL_RAID5:
 1498                 if (qual != G_RAID_VOLUME_RLQ_R5RA &&
 1499                     qual != G_RAID_VOLUME_RLQ_R5RS &&
 1500                     qual != G_RAID_VOLUME_RLQ_R5LA &&
 1501                     qual != G_RAID_VOLUME_RLQ_R5LS)
 1502                         return (0);
 1503                 if (disks < 3)
 1504                         return (0);
 1505                 break;
 1506         case G_RAID_VOLUME_RL_RAID6:
 1507                 if (qual != G_RAID_VOLUME_RLQ_R6RA &&
 1508                     qual != G_RAID_VOLUME_RLQ_R6RS &&
 1509                     qual != G_RAID_VOLUME_RLQ_R6LA &&
 1510                     qual != G_RAID_VOLUME_RLQ_R6LS)
 1511                         return (0);
 1512                 if (disks < 4)
 1513                         return (0);
 1514                 break;
 1515         case G_RAID_VOLUME_RL_RAIDMDF:
 1516                 if (qual != G_RAID_VOLUME_RLQ_RMDFRA &&
 1517                     qual != G_RAID_VOLUME_RLQ_RMDFRS &&
 1518                     qual != G_RAID_VOLUME_RLQ_RMDFLA &&
 1519                     qual != G_RAID_VOLUME_RLQ_RMDFLS)
 1520                         return (0);
 1521                 if (disks < 4)
 1522                         return (0);
 1523                 break;
 1524         case G_RAID_VOLUME_RL_RAID1E:
 1525                 if (qual != G_RAID_VOLUME_RLQ_R1EA &&
 1526                     qual != G_RAID_VOLUME_RLQ_R1EO)
 1527                         return (0);
 1528                 if (disks < 3)
 1529                         return (0);
 1530                 break;
 1531         case G_RAID_VOLUME_RL_SINGLE:
 1532                 if (qual != G_RAID_VOLUME_RLQ_NONE)
 1533                         return (0);
 1534                 if (disks != 1)
 1535                         return (0);
 1536                 break;
 1537         case G_RAID_VOLUME_RL_CONCAT:
 1538                 if (qual != G_RAID_VOLUME_RLQ_NONE)
 1539                         return (0);
 1540                 if (disks < 2)
 1541                         return (0);
 1542                 break;
 1543         case G_RAID_VOLUME_RL_RAID5E:
 1544                 if (qual != G_RAID_VOLUME_RLQ_R5ERA &&
 1545                     qual != G_RAID_VOLUME_RLQ_R5ERS &&
 1546                     qual != G_RAID_VOLUME_RLQ_R5ELA &&
 1547                     qual != G_RAID_VOLUME_RLQ_R5ELS)
 1548                         return (0);
 1549                 if (disks < 4)
 1550                         return (0);
 1551                 break;
 1552         case G_RAID_VOLUME_RL_RAID5EE:
 1553                 if (qual != G_RAID_VOLUME_RLQ_R5EERA &&
 1554                     qual != G_RAID_VOLUME_RLQ_R5EERS &&
 1555                     qual != G_RAID_VOLUME_RLQ_R5EELA &&
 1556                     qual != G_RAID_VOLUME_RLQ_R5EELS)
 1557                         return (0);
 1558                 if (disks < 4)
 1559                         return (0);
 1560                 break;
 1561         case G_RAID_VOLUME_RL_RAID5R:
 1562                 if (qual != G_RAID_VOLUME_RLQ_R5RRA &&
 1563                     qual != G_RAID_VOLUME_RLQ_R5RRS &&
 1564                     qual != G_RAID_VOLUME_RLQ_R5RLA &&
 1565                     qual != G_RAID_VOLUME_RLQ_R5RLS)
 1566                         return (0);
 1567                 if (disks < 3)
 1568                         return (0);
 1569                 break;
 1570         default:
 1571                 return (0);
 1572         }
 1573         return (1);
 1574 }
 1575 
 1576 static int
 1577 g_raid_md_ddf_start_disk(struct g_raid_disk *disk, struct g_raid_volume *vol)
 1578 {
 1579         struct g_raid_softc *sc;
 1580         struct g_raid_subdisk *sd;
 1581         struct g_raid_md_ddf_perdisk *pd;
 1582         struct g_raid_md_ddf_pervolume *pv;
 1583         struct g_raid_md_ddf_object *mdi;
 1584         struct ddf_vol_meta *vmeta;
 1585         struct ddf_meta *pdmeta, *gmeta;
 1586         struct ddf_vdc_record *vdc1;
 1587         struct ddf_sa_record *sa;
 1588         off_t size, eoff = 0, esize = 0;
 1589         uint64_t *val2;
 1590         int disk_pos, md_disk_bvd = -1, md_disk_pos = -1, md_pde_pos;
 1591         int i, resurrection = 0;
 1592         uint32_t reference;
 1593 
 1594         sc = disk->d_softc;
 1595         mdi = (struct g_raid_md_ddf_object *)sc->sc_md;
 1596         pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
 1597         pdmeta = &pd->pd_meta;
 1598         reference = GET32(&pd->pd_meta, pdd->PD_Reference);
 1599 
 1600         pv = vol->v_md_data;
 1601         vmeta = &pv->pv_meta;
 1602         gmeta = &mdi->mdio_meta;
 1603 
 1604         /* Find disk position in metadata by it's reference. */
 1605         disk_pos = ddf_meta_find_disk(vmeta, reference,
 1606             &md_disk_bvd, &md_disk_pos);
 1607         md_pde_pos = ddf_meta_find_pd(gmeta, NULL, reference);
 1608 
 1609         if (disk_pos < 0) {
 1610                 G_RAID_DEBUG1(1, sc,
 1611                     "Disk %s is not a present part of the volume %s",
 1612                     g_raid_get_diskname(disk), vol->v_name);
 1613 
 1614                 /* Failed stale disk is useless for us. */
 1615                 if ((GET16(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) != 0) {
 1616                         g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED);
 1617                         return (0);
 1618                 }
 1619 
 1620                 /* If disk has some metadata for this volume - erase. */
 1621                 if ((vdc1 = ddf_meta_find_vdc(pdmeta, vmeta->vdc->VD_GUID)) != NULL)
 1622                         SET32D(pdmeta, vdc1->Signature, 0xffffffff);
 1623 
 1624                 /* If we are in the start process, that's all for now. */
 1625                 if (!pv->pv_started)
 1626                         goto nofit;
 1627                 /*
 1628                  * If we have already started - try to get use of the disk.
 1629                  * Try to replace OFFLINE disks first, then FAILED.
 1630                  */
 1631                 if (ddf_meta_count_vdc(&pd->pd_meta, NULL) >=
 1632                         GET16(&pd->pd_meta, hdr->Max_Partitions)) {
 1633                         G_RAID_DEBUG1(1, sc, "No free partitions on disk %s",
 1634                             g_raid_get_diskname(disk));
 1635                         goto nofit;
 1636                 }
 1637                 ddf_meta_unused_range(&pd->pd_meta, &eoff, &esize);
 1638                 if (esize == 0) {
 1639                         G_RAID_DEBUG1(1, sc, "No free space on disk %s",
 1640                             g_raid_get_diskname(disk));
 1641                         goto nofit;
 1642                 }
 1643                 eoff *= pd->pd_meta.sectorsize;
 1644                 esize *= pd->pd_meta.sectorsize;
 1645                 size = INT64_MAX;
 1646                 for (i = 0; i < vol->v_disks_count; i++) {
 1647                         sd = &vol->v_subdisks[i];
 1648                         if (sd->sd_state != G_RAID_SUBDISK_S_NONE)
 1649                                 size = sd->sd_size;
 1650                         if (sd->sd_state <= G_RAID_SUBDISK_S_FAILED &&
 1651                             (disk_pos < 0 ||
 1652                              vol->v_subdisks[i].sd_state < sd->sd_state))
 1653                                 disk_pos = i;
 1654                 }
 1655                 if (disk_pos >= 0 &&
 1656                     vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT &&
 1657                     esize < size) {
 1658                         G_RAID_DEBUG1(1, sc, "Disk %s free space "
 1659                             "is too small (%ju < %ju)",
 1660                             g_raid_get_diskname(disk), esize, size);
 1661                         disk_pos = -1;
 1662                 }
 1663                 if (disk_pos >= 0) {
 1664                         if (vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT)
 1665                                 esize = size;
 1666                         md_disk_bvd = disk_pos / GET16(vmeta, vdc->Primary_Element_Count); // XXX
 1667                         md_disk_pos = disk_pos % GET16(vmeta, vdc->Primary_Element_Count); // XXX
 1668                 } else {
 1669 nofit:
 1670                         if (disk->d_state == G_RAID_DISK_S_NONE)
 1671                                 g_raid_change_disk_state(disk,
 1672                                     G_RAID_DISK_S_STALE);
 1673                         return (0);
 1674                 }
 1675 
 1676                 /*
 1677                  * If spare is committable, delete spare record.
 1678                  * Othersize, mark it active and leave there.
 1679                  */
 1680                 sa = ddf_meta_find_sa(&pd->pd_meta, 0);
 1681                 if (sa != NULL) {
 1682                         if ((GET8D(&pd->pd_meta, sa->Spare_Type) &
 1683                             DDF_SAR_TYPE_REVERTIBLE) == 0) {
 1684                                 SET32D(&pd->pd_meta, sa->Signature, 0xffffffff);
 1685                         } else {
 1686                                 SET8D(&pd->pd_meta, sa->Spare_Type,
 1687                                     GET8D(&pd->pd_meta, sa->Spare_Type) |
 1688                                     DDF_SAR_TYPE_ACTIVE);
 1689                         }
 1690                 }
 1691 
 1692                 G_RAID_DEBUG1(1, sc, "Disk %s takes pos %d in the volume %s",
 1693                     g_raid_get_diskname(disk), disk_pos, vol->v_name);
 1694                 resurrection = 1;
 1695         }
 1696 
 1697         sd = &vol->v_subdisks[disk_pos];
 1698 
 1699         if (resurrection && sd->sd_disk != NULL) {
 1700                 g_raid_change_disk_state(sd->sd_disk,
 1701                     G_RAID_DISK_S_STALE_FAILED);
 1702                 TAILQ_REMOVE(&sd->sd_disk->d_subdisks,
 1703                     sd, sd_next);
 1704         }
 1705         vol->v_subdisks[disk_pos].sd_disk = disk;
 1706         TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
 1707 
 1708         /* Welcome the new disk. */
 1709         if (resurrection)
 1710                 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
 1711         else if (GET8(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA)
 1712                 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
 1713         else
 1714                 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
 1715 
 1716         if (resurrection) {
 1717                 sd->sd_offset = eoff;
 1718                 sd->sd_size = esize;
 1719         } else if (pdmeta->cr != NULL &&
 1720             (vdc1 = ddf_meta_find_vdc(pdmeta, vmeta->vdc->VD_GUID)) != NULL) {
 1721                 val2 = (uint64_t *)&(vdc1->Physical_Disk_Sequence[GET16(vmeta, hdr->Max_Primary_Element_Entries)]);
 1722                 sd->sd_offset = (off_t)GET64P(pdmeta, val2 + md_disk_pos) * 512;
 1723                 sd->sd_size = (off_t)GET64D(pdmeta, vdc1->Block_Count) * 512;
 1724         }
 1725 
 1726         if (resurrection) {
 1727                 /* Stale disk, almost same as new. */
 1728                 g_raid_change_subdisk_state(sd,
 1729                     G_RAID_SUBDISK_S_NEW);
 1730         } else if (GET8(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) {
 1731                 /* Failed disk. */
 1732                 g_raid_change_subdisk_state(sd,
 1733                     G_RAID_SUBDISK_S_FAILED);
 1734         } else if ((GET8(gmeta, pdr->entry[md_pde_pos].PD_State) &
 1735              (DDF_PDE_FAILED | DDF_PDE_REBUILD)) != 0) {
 1736                 /* Rebuilding disk. */
 1737                 g_raid_change_subdisk_state(sd,
 1738                     G_RAID_SUBDISK_S_REBUILD);
 1739                 sd->sd_rebuild_pos = 0;
 1740         } else if ((GET8(vmeta, vde->VD_State) & DDF_VDE_DIRTY) != 0 ||
 1741             (GET8(vmeta, vde->Init_State) & DDF_VDE_INIT_MASK) !=
 1742              DDF_VDE_INIT_FULL) {
 1743                 /* Stale disk or dirty volume (unclean shutdown). */
 1744                 g_raid_change_subdisk_state(sd,
 1745                     G_RAID_SUBDISK_S_STALE);
 1746         } else {
 1747                 /* Up to date disk. */
 1748                 g_raid_change_subdisk_state(sd,
 1749                     G_RAID_SUBDISK_S_ACTIVE);
 1750         }
 1751         g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
 1752             G_RAID_EVENT_SUBDISK);
 1753 
 1754         return (resurrection);
 1755 }
 1756 
 1757 static void
 1758 g_raid_md_ddf_refill(struct g_raid_softc *sc)
 1759 {
 1760         struct g_raid_volume *vol;
 1761         struct g_raid_subdisk *sd;
 1762         struct g_raid_disk *disk;
 1763         struct g_raid_md_object *md;
 1764         struct g_raid_md_ddf_perdisk *pd;
 1765         struct g_raid_md_ddf_pervolume *pv;
 1766         int update, updated, i, bad;
 1767 
 1768         md = sc->sc_md;
 1769 restart:
 1770         updated = 0;
 1771         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
 1772                 pv = vol->v_md_data;
 1773                 if (!pv->pv_started || vol->v_stopping)
 1774                         continue;
 1775 
 1776                 /* Search for subdisk that needs replacement. */
 1777                 bad = 0;
 1778                 for (i = 0; i < vol->v_disks_count; i++) {
 1779                         sd = &vol->v_subdisks[i];
 1780                         if (sd->sd_state == G_RAID_SUBDISK_S_NONE ||
 1781                             sd->sd_state == G_RAID_SUBDISK_S_FAILED)
 1782                                 bad = 1;
 1783                 }
 1784                 if (!bad)
 1785                         continue;
 1786 
 1787                 G_RAID_DEBUG1(1, sc, "Volume %s is not complete, "
 1788                     "trying to refill.", vol->v_name);
 1789 
 1790                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 1791                         /* Skip failed. */
 1792                         if (disk->d_state < G_RAID_DISK_S_SPARE)
 1793                                 continue;
 1794                         /* Skip already used by this volume. */
 1795                         for (i = 0; i < vol->v_disks_count; i++) {
 1796                                 sd = &vol->v_subdisks[i];
 1797                                 if (sd->sd_disk == disk)
 1798                                         break;
 1799                         }
 1800                         if (i < vol->v_disks_count)
 1801                                 continue;
 1802 
 1803                         /* Try to use disk if it has empty extents. */
 1804                         pd = disk->d_md_data;
 1805                         if (ddf_meta_count_vdc(&pd->pd_meta, NULL) <
 1806                             GET16(&pd->pd_meta, hdr->Max_Partitions)) {
 1807                                 update = g_raid_md_ddf_start_disk(disk, vol);
 1808                         } else
 1809                                 update = 0;
 1810                         if (update) {
 1811                                 updated = 1;
 1812                                 g_raid_md_write_ddf(md, vol, NULL, disk);
 1813                                 break;
 1814                         }
 1815                 }
 1816         }
 1817         if (updated)
 1818                 goto restart;
 1819 }
 1820 
 1821 static void
 1822 g_raid_md_ddf_start(struct g_raid_volume *vol)
 1823 {
 1824         struct g_raid_softc *sc;
 1825         struct g_raid_subdisk *sd;
 1826         struct g_raid_disk *disk;
 1827         struct g_raid_md_object *md;
 1828         struct g_raid_md_ddf_perdisk *pd;
 1829         struct g_raid_md_ddf_pervolume *pv;
 1830         struct g_raid_md_ddf_object *mdi;
 1831         struct ddf_vol_meta *vmeta;
 1832         struct ddf_vdc_record *vdc;
 1833         uint64_t *val2;
 1834         int i, j, bvd;
 1835 
 1836         sc = vol->v_softc;
 1837         md = sc->sc_md;
 1838         mdi = (struct g_raid_md_ddf_object *)md;
 1839         pv = vol->v_md_data;
 1840         vmeta = &pv->pv_meta;
 1841         vdc = vmeta->vdc;
 1842 
 1843         vol->v_raid_level = GET8(vmeta, vdc->Primary_RAID_Level);
 1844         vol->v_raid_level_qualifier = GET8(vmeta, vdc->RLQ);
 1845         if (GET8(vmeta, vdc->Secondary_Element_Count) > 1 &&
 1846             vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 &&
 1847             GET8(vmeta, vdc->Secondary_RAID_Level) == 0)
 1848                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
 1849         vol->v_sectorsize = GET16(vmeta, vdc->Block_Size);
 1850         if (vol->v_sectorsize == 0xffff)
 1851                 vol->v_sectorsize = vmeta->sectorsize;
 1852         vol->v_strip_size = vol->v_sectorsize << GET8(vmeta, vdc->Stripe_Size);
 1853         vol->v_disks_count = GET16(vmeta, vdc->Primary_Element_Count) *
 1854             GET8(vmeta, vdc->Secondary_Element_Count);
 1855         vol->v_mdf_pdisks = GET8(vmeta, vdc->MDF_Parity_Disks);
 1856         vol->v_mdf_polynomial = GET16(vmeta, vdc->MDF_Parity_Generator_Polynomial);
 1857         vol->v_mdf_method = GET8(vmeta, vdc->MDF_Constant_Generation_Method);
 1858         if (GET8(vmeta, vdc->Rotate_Parity_count) > 31)
 1859                 vol->v_rotate_parity = 1;
 1860         else
 1861                 vol->v_rotate_parity = 1 << GET8(vmeta, vdc->Rotate_Parity_count);
 1862         vol->v_mediasize = GET64(vmeta, vdc->VD_Size) * vol->v_sectorsize;
 1863         for (i = 0, j = 0, bvd = 0; i < vol->v_disks_count; i++, j++) {
 1864                 if (j == GET16(vmeta, vdc->Primary_Element_Count)) {
 1865                         j = 0;
 1866                         bvd++;
 1867                 }
 1868                 sd = &vol->v_subdisks[i];
 1869                 if (vmeta->bvdc[bvd] == NULL) {
 1870                         sd->sd_offset = 0;
 1871                         sd->sd_size = GET64(vmeta, vdc->Block_Count) *
 1872                             vol->v_sectorsize;
 1873                         continue;
 1874                 }
 1875                 val2 = (uint64_t *)&(vmeta->bvdc[bvd]->Physical_Disk_Sequence[
 1876                     GET16(vmeta, hdr->Max_Primary_Element_Entries)]);
 1877                 sd->sd_offset = GET64P(vmeta, val2 + j) * vol->v_sectorsize;
 1878                 sd->sd_size = GET64(vmeta, bvdc[bvd]->Block_Count) *
 1879                     vol->v_sectorsize;
 1880         }
 1881         g_raid_start_volume(vol);
 1882 
 1883         /* Make all disks found till the moment take their places. */
 1884         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 1885                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
 1886                 if (ddf_meta_find_vdc(&pd->pd_meta, vmeta->vdc->VD_GUID) != NULL)
 1887                         g_raid_md_ddf_start_disk(disk, vol);
 1888         }
 1889 
 1890         pv->pv_started = 1;
 1891         mdi->mdio_starting--;
 1892         callout_stop(&pv->pv_start_co);
 1893         G_RAID_DEBUG1(0, sc, "Volume started.");
 1894         g_raid_md_write_ddf(md, vol, NULL, NULL);
 1895 
 1896         /* Pickup any STALE/SPARE disks to refill array if needed. */
 1897         g_raid_md_ddf_refill(sc);
 1898 
 1899         g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME);
 1900 }
 1901 
 1902 static void
 1903 g_raid_ddf_go(void *arg)
 1904 {
 1905         struct g_raid_volume *vol;
 1906         struct g_raid_softc *sc;
 1907         struct g_raid_md_ddf_pervolume *pv;
 1908 
 1909         vol = arg;
 1910         pv = vol->v_md_data;
 1911         sc = vol->v_softc;
 1912         if (!pv->pv_started) {
 1913                 G_RAID_DEBUG1(0, sc, "Force volume start due to timeout.");
 1914                 g_raid_event_send(vol, G_RAID_VOLUME_E_STARTMD,
 1915                     G_RAID_EVENT_VOLUME);
 1916         }
 1917 }
 1918 
 1919 static void
 1920 g_raid_md_ddf_new_disk(struct g_raid_disk *disk)
 1921 {
 1922         struct g_raid_softc *sc;
 1923         struct g_raid_md_object *md;
 1924         struct g_raid_md_ddf_perdisk *pd;
 1925         struct g_raid_md_ddf_pervolume *pv;
 1926         struct g_raid_md_ddf_object *mdi;
 1927         struct g_raid_volume *vol;
 1928         struct ddf_meta *pdmeta;
 1929         struct ddf_vol_meta *vmeta;
 1930         struct ddf_vdc_record *vdc;
 1931         struct ddf_vd_entry *vde;
 1932         int i, j, k, num, have, need, cnt, spare;
 1933         uint32_t val;
 1934         char buf[17];
 1935 
 1936         sc = disk->d_softc;
 1937         md = sc->sc_md;
 1938         mdi = (struct g_raid_md_ddf_object *)md;
 1939         pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
 1940         pdmeta = &pd->pd_meta;
 1941         spare = -1;
 1942 
 1943         if (mdi->mdio_meta.hdr == NULL)
 1944                 ddf_meta_copy(&mdi->mdio_meta, pdmeta);
 1945         else
 1946                 ddf_meta_update(&mdi->mdio_meta, pdmeta);
 1947 
 1948         num = GETCRNUM(pdmeta);
 1949         for (j = 0; j < num; j++) {
 1950                 vdc = GETVDCPTR(pdmeta, j);
 1951                 val = GET32D(pdmeta, vdc->Signature);
 1952 
 1953                 if (val == DDF_SA_SIGNATURE && spare == -1)
 1954                         spare = 1;
 1955 
 1956                 if (val != DDF_VDCR_SIGNATURE)
 1957                         continue;
 1958                 spare = 0;
 1959                 k = ddf_meta_find_vd(pdmeta, vdc->VD_GUID);
 1960                 if (k < 0)
 1961                         continue;
 1962                 vde = &pdmeta->vdr->entry[k];
 1963 
 1964                 /* Look for volume with matching ID. */
 1965                 vol = g_raid_md_ddf_get_volume(sc, vdc->VD_GUID);
 1966                 if (vol == NULL) {
 1967                         ddf_meta_get_name(pdmeta, k, buf);
 1968                         vol = g_raid_create_volume(sc, buf,
 1969                             GET16D(pdmeta, vde->VD_Number));
 1970                         pv = malloc(sizeof(*pv), M_MD_DDF, M_WAITOK | M_ZERO);
 1971                         vol->v_md_data = pv;
 1972                         callout_init(&pv->pv_start_co, 1);
 1973                         callout_reset(&pv->pv_start_co,
 1974                             g_raid_start_timeout * hz,
 1975                             g_raid_ddf_go, vol);
 1976                         mdi->mdio_starting++;
 1977                 } else
 1978                         pv = vol->v_md_data;
 1979 
 1980                 /* If we haven't started yet - check metadata freshness. */
 1981                 vmeta = &pv->pv_meta;
 1982                 ddf_vol_meta_update(vmeta, pdmeta, vdc->VD_GUID, pv->pv_started);
 1983         }
 1984 
 1985         if (spare == 1) {
 1986                 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
 1987                 g_raid_md_ddf_refill(sc);
 1988         }
 1989 
 1990         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
 1991                 pv = vol->v_md_data;
 1992                 vmeta = &pv->pv_meta;
 1993 
 1994                 if (ddf_meta_find_vdc(pdmeta, vmeta->vdc->VD_GUID) == NULL)
 1995                         continue;
 1996 
 1997                 if (pv->pv_started) {
 1998                         if (g_raid_md_ddf_start_disk(disk, vol))
 1999                                 g_raid_md_write_ddf(md, vol, NULL, NULL);
 2000                         continue;
 2001                 }
 2002 
 2003                 /* If we collected all needed disks - start array. */
 2004                 need = 0;
 2005                 have = 0;
 2006                 for (k = 0; k < GET8(vmeta, vdc->Secondary_Element_Count); k++) {
 2007                         if (vmeta->bvdc[k] == NULL) {
 2008                                 need += GET16(vmeta, vdc->Primary_Element_Count);
 2009                                 continue;
 2010                         }
 2011                         cnt = GET16(vmeta, bvdc[k]->Primary_Element_Count);
 2012                         need += cnt;
 2013                         for (i = 0; i < cnt; i++) {
 2014                                 val = GET32(vmeta, bvdc[k]->Physical_Disk_Sequence[i]);
 2015                                 if (g_raid_md_ddf_get_disk(sc, NULL, val) != NULL)
 2016                                         have++;
 2017                         }
 2018                 }
 2019                 G_RAID_DEBUG1(1, sc, "Volume %s now has %d of %d disks",
 2020                     vol->v_name, have, need);
 2021                 if (have == need)
 2022                         g_raid_md_ddf_start(vol);
 2023         }
 2024 }
 2025 
 2026 static int
 2027 g_raid_md_create_req_ddf(struct g_raid_md_object *md, struct g_class *mp,
 2028     struct gctl_req *req, struct g_geom **gp)
 2029 {
 2030         struct g_geom *geom;
 2031         struct g_raid_softc *sc;
 2032         struct g_raid_md_ddf_object *mdi, *mdi1;
 2033         char name[16];
 2034         const char *fmtopt;
 2035         int be = 1;
 2036 
 2037         mdi = (struct g_raid_md_ddf_object *)md;
 2038         fmtopt = gctl_get_asciiparam(req, "fmtopt");
 2039         if (fmtopt == NULL || strcasecmp(fmtopt, "BE") == 0)
 2040                 be = 1;
 2041         else if (strcasecmp(fmtopt, "LE") == 0)
 2042                 be = 0;
 2043         else {
 2044                 gctl_error(req, "Incorrect fmtopt argument.");
 2045                 return (G_RAID_MD_TASTE_FAIL);
 2046         }
 2047 
 2048         /* Search for existing node. */
 2049         LIST_FOREACH(geom, &mp->geom, geom) {
 2050                 sc = geom->softc;
 2051                 if (sc == NULL)
 2052                         continue;
 2053                 if (sc->sc_stopping != 0)
 2054                         continue;
 2055                 if (sc->sc_md->mdo_class != md->mdo_class)
 2056                         continue;
 2057                 mdi1 = (struct g_raid_md_ddf_object *)sc->sc_md;
 2058                 if (mdi1->mdio_bigendian != be)
 2059                         continue;
 2060                 break;
 2061         }
 2062         if (geom != NULL) {
 2063                 *gp = geom;
 2064                 return (G_RAID_MD_TASTE_EXISTING);
 2065         }
 2066 
 2067         /* Create new one if not found. */
 2068         mdi->mdio_bigendian = be;
 2069         snprintf(name, sizeof(name), "DDF%s", be ? "" : "-LE");
 2070         sc = g_raid_create_node(mp, name, md);
 2071         if (sc == NULL)
 2072                 return (G_RAID_MD_TASTE_FAIL);
 2073         md->mdo_softc = sc;
 2074         *gp = sc->sc_geom;
 2075         return (G_RAID_MD_TASTE_NEW);
 2076 }
 2077 
 2078 static int
 2079 g_raid_md_taste_ddf(struct g_raid_md_object *md, struct g_class *mp,
 2080                               struct g_consumer *cp, struct g_geom **gp)
 2081 {
 2082         struct g_consumer *rcp;
 2083         struct g_provider *pp;
 2084         struct g_raid_softc *sc;
 2085         struct g_raid_disk *disk;
 2086         struct ddf_meta meta;
 2087         struct g_raid_md_ddf_perdisk *pd;
 2088         struct g_raid_md_ddf_object *mdi;
 2089         struct g_geom *geom;
 2090         int error, result, len, be;
 2091         char name[16];
 2092 
 2093         G_RAID_DEBUG(1, "Tasting DDF on %s", cp->provider->name);
 2094         mdi = (struct g_raid_md_ddf_object *)md;
 2095         pp = cp->provider;
 2096 
 2097         /* Read metadata from device. */
 2098         if (g_access(cp, 1, 0, 0) != 0)
 2099                 return (G_RAID_MD_TASTE_FAIL);
 2100         g_topology_unlock();
 2101         bzero(&meta, sizeof(meta));
 2102         error = ddf_meta_read(cp, &meta);
 2103         g_topology_lock();
 2104         g_access(cp, -1, 0, 0);
 2105         if (error != 0)
 2106                 return (G_RAID_MD_TASTE_FAIL);
 2107         be = meta.bigendian;
 2108 
 2109         /* Metadata valid. Print it. */
 2110         g_raid_md_ddf_print(&meta);
 2111 
 2112         /* Search for matching node. */
 2113         sc = NULL;
 2114         LIST_FOREACH(geom, &mp->geom, geom) {
 2115                 sc = geom->softc;
 2116                 if (sc == NULL)
 2117                         continue;
 2118                 if (sc->sc_stopping != 0)
 2119                         continue;
 2120                 if (sc->sc_md->mdo_class != md->mdo_class)
 2121                         continue;
 2122                 mdi = (struct g_raid_md_ddf_object *)sc->sc_md;
 2123                 if (mdi->mdio_bigendian != be)
 2124                         continue;
 2125                 break;
 2126         }
 2127 
 2128         /* Found matching node. */
 2129         if (geom != NULL) {
 2130                 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
 2131                 result = G_RAID_MD_TASTE_EXISTING;
 2132 
 2133         } else { /* Not found matching node -- create one. */
 2134                 result = G_RAID_MD_TASTE_NEW;
 2135                 mdi->mdio_bigendian = be;
 2136                 snprintf(name, sizeof(name), "DDF%s", be ? "" : "-LE");
 2137                 sc = g_raid_create_node(mp, name, md);
 2138                 md->mdo_softc = sc;
 2139                 geom = sc->sc_geom;
 2140         }
 2141 
 2142         rcp = g_new_consumer(geom);
 2143         g_attach(rcp, pp);
 2144         if (g_access(rcp, 1, 1, 1) != 0)
 2145                 ; //goto fail1;
 2146 
 2147         g_topology_unlock();
 2148         sx_xlock(&sc->sc_lock);
 2149 
 2150         pd = malloc(sizeof(*pd), M_MD_DDF, M_WAITOK | M_ZERO);
 2151         pd->pd_meta = meta;
 2152         disk = g_raid_create_disk(sc);
 2153         disk->d_md_data = (void *)pd;
 2154         disk->d_consumer = rcp;
 2155         rcp->private = disk;
 2156 
 2157         /* Read kernel dumping information. */
 2158         disk->d_kd.offset = 0;
 2159         disk->d_kd.length = OFF_MAX;
 2160         len = sizeof(disk->d_kd);
 2161         error = g_io_getattr("GEOM::kerneldump", rcp, &len, &disk->d_kd);
 2162         if (disk->d_kd.di.dumper == NULL)
 2163                 G_RAID_DEBUG1(2, sc, "Dumping not supported by %s: %d.", 
 2164                     rcp->provider->name, error);
 2165 
 2166         g_raid_md_ddf_new_disk(disk);
 2167 
 2168         sx_xunlock(&sc->sc_lock);
 2169         g_topology_lock();
 2170         *gp = geom;
 2171         return (result);
 2172 }
 2173 
 2174 static int
 2175 g_raid_md_event_ddf(struct g_raid_md_object *md,
 2176     struct g_raid_disk *disk, u_int event)
 2177 {
 2178         struct g_raid_softc *sc;
 2179 
 2180         sc = md->mdo_softc;
 2181         if (disk == NULL)
 2182                 return (-1);
 2183         switch (event) {
 2184         case G_RAID_DISK_E_DISCONNECTED:
 2185                 /* Delete disk. */
 2186                 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
 2187                 g_raid_destroy_disk(disk);
 2188                 g_raid_md_ddf_purge_volumes(sc);
 2189 
 2190                 /* Write updated metadata to all disks. */
 2191                 g_raid_md_write_ddf(md, NULL, NULL, NULL);
 2192 
 2193                 /* Check if anything left. */
 2194                 if (g_raid_ndisks(sc, -1) == 0)
 2195                         g_raid_destroy_node(sc, 0);
 2196                 else
 2197                         g_raid_md_ddf_refill(sc);
 2198                 return (0);
 2199         }
 2200         return (-2);
 2201 }
 2202 
 2203 static int
 2204 g_raid_md_volume_event_ddf(struct g_raid_md_object *md,
 2205     struct g_raid_volume *vol, u_int event)
 2206 {
 2207         struct g_raid_md_ddf_pervolume *pv;
 2208 
 2209         pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
 2210         switch (event) {
 2211         case G_RAID_VOLUME_E_STARTMD:
 2212                 if (!pv->pv_started)
 2213                         g_raid_md_ddf_start(vol);
 2214                 return (0);
 2215         }
 2216         return (-2);
 2217 }
 2218 
 2219 static int
 2220 g_raid_md_ctl_ddf(struct g_raid_md_object *md,
 2221     struct gctl_req *req)
 2222 {
 2223         struct g_raid_softc *sc;
 2224         struct g_raid_volume *vol, *vol1;
 2225         struct g_raid_subdisk *sd;
 2226         struct g_raid_disk *disk, *disks[DDF_MAX_DISKS_HARD];
 2227         struct g_raid_md_ddf_perdisk *pd;
 2228         struct g_raid_md_ddf_pervolume *pv;
 2229         struct g_raid_md_ddf_object *mdi;
 2230         struct ddf_sa_record *sa;
 2231         struct g_consumer *cp;
 2232         struct g_provider *pp;
 2233         char arg[16];
 2234         const char *verb, *volname, *levelname, *diskname;
 2235         char *tmp;
 2236         int *nargs, *force;
 2237         off_t size, sectorsize, strip, offs[DDF_MAX_DISKS_HARD], esize;
 2238         intmax_t *sizearg, *striparg;
 2239         int i, numdisks, len, level, qual;
 2240         int error;
 2241 
 2242         sc = md->mdo_softc;
 2243         mdi = (struct g_raid_md_ddf_object *)md;
 2244         verb = gctl_get_param(req, "verb", NULL);
 2245         nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
 2246         error = 0;
 2247 
 2248         if (strcmp(verb, "label") == 0) {
 2249 
 2250                 if (*nargs < 4) {
 2251                         gctl_error(req, "Invalid number of arguments.");
 2252                         return (-1);
 2253                 }
 2254                 volname = gctl_get_asciiparam(req, "arg1");
 2255                 if (volname == NULL) {
 2256                         gctl_error(req, "No volume name.");
 2257                         return (-2);
 2258                 }
 2259                 levelname = gctl_get_asciiparam(req, "arg2");
 2260                 if (levelname == NULL) {
 2261                         gctl_error(req, "No RAID level.");
 2262                         return (-3);
 2263                 }
 2264                 if (g_raid_volume_str2level(levelname, &level, &qual)) {
 2265                         gctl_error(req, "Unknown RAID level '%s'.", levelname);
 2266                         return (-4);
 2267                 }
 2268                 numdisks = *nargs - 3;
 2269                 force = gctl_get_paraml(req, "force", sizeof(*force));
 2270                 if (!g_raid_md_ddf_supported(level, qual, numdisks,
 2271                     force ? *force : 0)) {
 2272                         gctl_error(req, "Unsupported RAID level "
 2273                             "(0x%02x/0x%02x), or number of disks (%d).",
 2274                             level, qual, numdisks);
 2275                         return (-5);
 2276                 }
 2277 
 2278                 /* Search for disks, connect them and probe. */
 2279                 size = INT64_MAX;
 2280                 sectorsize = 0;
 2281                 bzero(disks, sizeof(disks));
 2282                 bzero(offs, sizeof(offs));
 2283                 for (i = 0; i < numdisks; i++) {
 2284                         snprintf(arg, sizeof(arg), "arg%d", i + 3);
 2285                         diskname = gctl_get_asciiparam(req, arg);
 2286                         if (diskname == NULL) {
 2287                                 gctl_error(req, "No disk name (%s).", arg);
 2288                                 error = -6;
 2289                                 break;
 2290                         }
 2291                         if (strcmp(diskname, "NONE") == 0)
 2292                                 continue;
 2293 
 2294                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 2295                                 if (disk->d_consumer != NULL && 
 2296                                     disk->d_consumer->provider != NULL &&
 2297                                     strcmp(disk->d_consumer->provider->name,
 2298                                      diskname) == 0)
 2299                                         break;
 2300                         }
 2301                         if (disk != NULL) {
 2302                                 if (disk->d_state != G_RAID_DISK_S_ACTIVE) {
 2303                                         gctl_error(req, "Disk '%s' is in a "
 2304                                             "wrong state (%s).", diskname,
 2305                                             g_raid_disk_state2str(disk->d_state));
 2306                                         error = -7;
 2307                                         break;
 2308                                 }
 2309                                 pd = disk->d_md_data;
 2310                                 if (ddf_meta_count_vdc(&pd->pd_meta, NULL) >=
 2311                                     GET16(&pd->pd_meta, hdr->Max_Partitions)) {
 2312                                         gctl_error(req, "No free partitions "
 2313                                             "on disk '%s'.",
 2314                                             diskname);
 2315                                         error = -7;
 2316                                         break;
 2317                                 }
 2318                                 pp = disk->d_consumer->provider;
 2319                                 disks[i] = disk;
 2320                                 ddf_meta_unused_range(&pd->pd_meta,
 2321                                     &offs[i], &esize);
 2322                                 offs[i] *= pp->sectorsize;
 2323                                 size = MIN(size, (off_t)esize * pp->sectorsize);
 2324                                 sectorsize = MAX(sectorsize, pp->sectorsize);
 2325                                 continue;
 2326                         }
 2327 
 2328                         g_topology_lock();
 2329                         cp = g_raid_open_consumer(sc, diskname);
 2330                         if (cp == NULL) {
 2331                                 gctl_error(req, "Can't open disk '%s'.",
 2332                                     diskname);
 2333                                 g_topology_unlock();
 2334                                 error = -8;
 2335                                 break;
 2336                         }
 2337                         pp = cp->provider;
 2338                         pd = malloc(sizeof(*pd), M_MD_DDF, M_WAITOK | M_ZERO);
 2339                         disk = g_raid_create_disk(sc);
 2340                         disk->d_md_data = (void *)pd;
 2341                         disk->d_consumer = cp;
 2342                         disks[i] = disk;
 2343                         cp->private = disk;
 2344                         ddf_meta_create(disk, &mdi->mdio_meta);
 2345                         if (mdi->mdio_meta.hdr == NULL)
 2346                                 ddf_meta_copy(&mdi->mdio_meta, &pd->pd_meta);
 2347                         else
 2348                                 ddf_meta_update(&mdi->mdio_meta, &pd->pd_meta);
 2349                         g_topology_unlock();
 2350 
 2351                         /* Read kernel dumping information. */
 2352                         disk->d_kd.offset = 0;
 2353                         disk->d_kd.length = OFF_MAX;
 2354                         len = sizeof(disk->d_kd);
 2355                         g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd);
 2356                         if (disk->d_kd.di.dumper == NULL)
 2357                                 G_RAID_DEBUG1(2, sc,
 2358                                     "Dumping not supported by %s.",
 2359                                     cp->provider->name);
 2360 
 2361                         /* Reserve some space for metadata. */
 2362                         size = MIN(size, GET64(&pd->pd_meta,
 2363                             pdr->entry[0].Configured_Size) * pp->sectorsize);
 2364                         sectorsize = MAX(sectorsize, pp->sectorsize);
 2365                 }
 2366                 if (error != 0) {
 2367                         for (i = 0; i < numdisks; i++) {
 2368                                 if (disks[i] != NULL &&
 2369                                     disks[i]->d_state == G_RAID_DISK_S_NONE)
 2370                                         g_raid_destroy_disk(disks[i]);
 2371                         }
 2372                         return (error);
 2373                 }
 2374 
 2375                 if (sectorsize <= 0) {
 2376                         gctl_error(req, "Can't get sector size.");
 2377                         return (-8);
 2378                 }
 2379 
 2380                 /* Handle size argument. */
 2381                 len = sizeof(*sizearg);
 2382                 sizearg = gctl_get_param(req, "size", &len);
 2383                 if (sizearg != NULL && len == sizeof(*sizearg) &&
 2384                     *sizearg > 0) {
 2385                         if (*sizearg > size) {
 2386                                 gctl_error(req, "Size too big %lld > %lld.",
 2387                                     (long long)*sizearg, (long long)size);
 2388                                 return (-9);
 2389                         }
 2390                         size = *sizearg;
 2391                 }
 2392 
 2393                 /* Handle strip argument. */
 2394                 strip = 131072;
 2395                 len = sizeof(*striparg);
 2396                 striparg = gctl_get_param(req, "strip", &len);
 2397                 if (striparg != NULL && len == sizeof(*striparg) &&
 2398                     *striparg > 0) {
 2399                         if (*striparg < sectorsize) {
 2400                                 gctl_error(req, "Strip size too small.");
 2401                                 return (-10);
 2402                         }
 2403                         if (*striparg % sectorsize != 0) {
 2404                                 gctl_error(req, "Incorrect strip size.");
 2405                                 return (-11);
 2406                         }
 2407                         strip = *striparg;
 2408                 }
 2409 
 2410                 /* Round size down to strip or sector. */
 2411                 if (level == G_RAID_VOLUME_RL_RAID1 ||
 2412                     level == G_RAID_VOLUME_RL_RAID3 ||
 2413                     level == G_RAID_VOLUME_RL_SINGLE ||
 2414                     level == G_RAID_VOLUME_RL_CONCAT)
 2415                         size -= (size % sectorsize);
 2416                 else if (level == G_RAID_VOLUME_RL_RAID1E &&
 2417                     (numdisks & 1) != 0)
 2418                         size -= (size % (2 * strip));
 2419                 else
 2420                         size -= (size % strip);
 2421                 if (size <= 0) {
 2422                         gctl_error(req, "Size too small.");
 2423                         return (-13);
 2424                 }
 2425 
 2426                 /* We have all we need, create things: volume, ... */
 2427                 pv = malloc(sizeof(*pv), M_MD_DDF, M_WAITOK | M_ZERO);
 2428                 ddf_vol_meta_create(&pv->pv_meta, &mdi->mdio_meta);
 2429                 pv->pv_started = 1;
 2430                 vol = g_raid_create_volume(sc, volname, -1);
 2431                 vol->v_md_data = pv;
 2432                 vol->v_raid_level = level;
 2433                 vol->v_raid_level_qualifier = qual;
 2434                 vol->v_strip_size = strip;
 2435                 vol->v_disks_count = numdisks;
 2436                 if (level == G_RAID_VOLUME_RL_RAID0 ||
 2437                     level == G_RAID_VOLUME_RL_CONCAT ||
 2438                     level == G_RAID_VOLUME_RL_SINGLE)
 2439                         vol->v_mediasize = size * numdisks;
 2440                 else if (level == G_RAID_VOLUME_RL_RAID1)
 2441                         vol->v_mediasize = size;
 2442                 else if (level == G_RAID_VOLUME_RL_RAID3 ||
 2443                     level == G_RAID_VOLUME_RL_RAID4 ||
 2444                     level == G_RAID_VOLUME_RL_RAID5)
 2445                         vol->v_mediasize = size * (numdisks - 1);
 2446                 else if (level == G_RAID_VOLUME_RL_RAID5R) {
 2447                         vol->v_mediasize = size * (numdisks - 1);
 2448                         vol->v_rotate_parity = 1024;
 2449                 } else if (level == G_RAID_VOLUME_RL_RAID6 ||
 2450                     level == G_RAID_VOLUME_RL_RAID5E ||
 2451                     level == G_RAID_VOLUME_RL_RAID5EE)
 2452                         vol->v_mediasize = size * (numdisks - 2);
 2453                 else if (level == G_RAID_VOLUME_RL_RAIDMDF) {
 2454                         if (numdisks < 5)
 2455                                 vol->v_mdf_pdisks = 2;
 2456                         else
 2457                                 vol->v_mdf_pdisks = 3;
 2458                         vol->v_mdf_polynomial = 0x11d;
 2459                         vol->v_mdf_method = 0x00;
 2460                         vol->v_mediasize = size * (numdisks - vol->v_mdf_pdisks);
 2461                 } else { /* RAID1E */
 2462                         vol->v_mediasize = ((size * numdisks) / strip / 2) *
 2463                             strip;
 2464                 }
 2465                 vol->v_sectorsize = sectorsize;
 2466                 g_raid_start_volume(vol);
 2467 
 2468                 /* , and subdisks. */
 2469                 for (i = 0; i < numdisks; i++) {
 2470                         disk = disks[i];
 2471                         sd = &vol->v_subdisks[i];
 2472                         sd->sd_disk = disk;
 2473                         sd->sd_offset = offs[i];
 2474                         sd->sd_size = size;
 2475                         if (disk == NULL)
 2476                                 continue;
 2477                         TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
 2478                         g_raid_change_disk_state(disk,
 2479                             G_RAID_DISK_S_ACTIVE);
 2480                         g_raid_change_subdisk_state(sd,
 2481                             G_RAID_SUBDISK_S_ACTIVE);
 2482                         g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
 2483                             G_RAID_EVENT_SUBDISK);
 2484                 }
 2485 
 2486                 /* Write metadata based on created entities. */
 2487                 G_RAID_DEBUG1(0, sc, "Array started.");
 2488                 g_raid_md_write_ddf(md, vol, NULL, NULL);
 2489 
 2490                 /* Pickup any STALE/SPARE disks to refill array if needed. */
 2491                 g_raid_md_ddf_refill(sc);
 2492 
 2493                 g_raid_event_send(vol, G_RAID_VOLUME_E_START,
 2494                     G_RAID_EVENT_VOLUME);
 2495                 return (0);
 2496         }
 2497         if (strcmp(verb, "add") == 0) {
 2498 
 2499                 gctl_error(req, "`add` command is not applicable, "
 2500                     "use `label` instead.");
 2501                 return (-99);
 2502         }
 2503         if (strcmp(verb, "delete") == 0) {
 2504 
 2505                 /* Full node destruction. */
 2506                 if (*nargs == 1) {
 2507                         /* Check if some volume is still open. */
 2508                         force = gctl_get_paraml(req, "force", sizeof(*force));
 2509                         if (force != NULL && *force == 0 &&
 2510                             g_raid_nopens(sc) != 0) {
 2511                                 gctl_error(req, "Some volume is still open.");
 2512                                 return (-4);
 2513                         }
 2514 
 2515                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 2516                                 if (disk->d_consumer)
 2517                                         ddf_meta_erase(disk->d_consumer);
 2518                         }
 2519                         g_raid_destroy_node(sc, 0);
 2520                         return (0);
 2521                 }
 2522 
 2523                 /* Destroy specified volume. If it was last - all node. */
 2524                 if (*nargs != 2) {
 2525                         gctl_error(req, "Invalid number of arguments.");
 2526                         return (-1);
 2527                 }
 2528                 volname = gctl_get_asciiparam(req, "arg1");
 2529                 if (volname == NULL) {
 2530                         gctl_error(req, "No volume name.");
 2531                         return (-2);
 2532                 }
 2533 
 2534                 /* Search for volume. */
 2535                 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
 2536                         if (strcmp(vol->v_name, volname) == 0)
 2537                                 break;
 2538                 }
 2539                 if (vol == NULL) {
 2540                         i = strtol(volname, &tmp, 10);
 2541                         if (verb != volname && tmp[0] == 0) {
 2542                                 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
 2543                                         if (vol->v_global_id == i)
 2544                                                 break;
 2545                                 }
 2546                         }
 2547                 }
 2548                 if (vol == NULL) {
 2549                         gctl_error(req, "Volume '%s' not found.", volname);
 2550                         return (-3);
 2551                 }
 2552 
 2553                 /* Check if volume is still open. */
 2554                 force = gctl_get_paraml(req, "force", sizeof(*force));
 2555                 if (force != NULL && *force == 0 &&
 2556                     vol->v_provider_open != 0) {
 2557                         gctl_error(req, "Volume is still open.");
 2558                         return (-4);
 2559                 }
 2560 
 2561                 /* Destroy volume and potentially node. */
 2562                 i = 0;
 2563                 TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next)
 2564                         i++;
 2565                 if (i >= 2) {
 2566                         g_raid_destroy_volume(vol);
 2567                         g_raid_md_ddf_purge_disks(sc);
 2568                         g_raid_md_write_ddf(md, NULL, NULL, NULL);
 2569                 } else {
 2570                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 2571                                 if (disk->d_consumer)
 2572                                         ddf_meta_erase(disk->d_consumer);
 2573                         }
 2574                         g_raid_destroy_node(sc, 0);
 2575                 }
 2576                 return (0);
 2577         }
 2578         if (strcmp(verb, "remove") == 0 ||
 2579             strcmp(verb, "fail") == 0) {
 2580                 if (*nargs < 2) {
 2581                         gctl_error(req, "Invalid number of arguments.");
 2582                         return (-1);
 2583                 }
 2584                 for (i = 1; i < *nargs; i++) {
 2585                         snprintf(arg, sizeof(arg), "arg%d", i);
 2586                         diskname = gctl_get_asciiparam(req, arg);
 2587                         if (diskname == NULL) {
 2588                                 gctl_error(req, "No disk name (%s).", arg);
 2589                                 error = -2;
 2590                                 break;
 2591                         }
 2592                         if (strncmp(diskname, "/dev/", 5) == 0)
 2593                                 diskname += 5;
 2594 
 2595                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 2596                                 if (disk->d_consumer != NULL && 
 2597                                     disk->d_consumer->provider != NULL &&
 2598                                     strcmp(disk->d_consumer->provider->name,
 2599                                      diskname) == 0)
 2600                                         break;
 2601                         }
 2602                         if (disk == NULL) {
 2603                                 gctl_error(req, "Disk '%s' not found.",
 2604                                     diskname);
 2605                                 error = -3;
 2606                                 break;
 2607                         }
 2608 
 2609                         if (strcmp(verb, "fail") == 0) {
 2610                                 g_raid_md_fail_disk_ddf(md, NULL, disk);
 2611                                 continue;
 2612                         }
 2613 
 2614                         /* Erase metadata on deleting disk and destroy it. */
 2615                         ddf_meta_erase(disk->d_consumer);
 2616                         g_raid_destroy_disk(disk);
 2617                 }
 2618                 g_raid_md_ddf_purge_volumes(sc);
 2619 
 2620                 /* Write updated metadata to remaining disks. */
 2621                 g_raid_md_write_ddf(md, NULL, NULL, NULL);
 2622 
 2623                 /* Check if anything left. */
 2624                 if (g_raid_ndisks(sc, -1) == 0)
 2625                         g_raid_destroy_node(sc, 0);
 2626                 else
 2627                         g_raid_md_ddf_refill(sc);
 2628                 return (error);
 2629         }
 2630         if (strcmp(verb, "insert") == 0) {
 2631                 if (*nargs < 2) {
 2632                         gctl_error(req, "Invalid number of arguments.");
 2633                         return (-1);
 2634                 }
 2635                 for (i = 1; i < *nargs; i++) {
 2636                         /* Get disk name. */
 2637                         snprintf(arg, sizeof(arg), "arg%d", i);
 2638                         diskname = gctl_get_asciiparam(req, arg);
 2639                         if (diskname == NULL) {
 2640                                 gctl_error(req, "No disk name (%s).", arg);
 2641                                 error = -3;
 2642                                 break;
 2643                         }
 2644 
 2645                         /* Try to find provider with specified name. */
 2646                         g_topology_lock();
 2647                         cp = g_raid_open_consumer(sc, diskname);
 2648                         if (cp == NULL) {
 2649                                 gctl_error(req, "Can't open disk '%s'.",
 2650                                     diskname);
 2651                                 g_topology_unlock();
 2652                                 error = -4;
 2653                                 break;
 2654                         }
 2655                         pp = cp->provider;
 2656                         g_topology_unlock();
 2657 
 2658                         pd = malloc(sizeof(*pd), M_MD_DDF, M_WAITOK | M_ZERO);
 2659 
 2660                         disk = g_raid_create_disk(sc);
 2661                         disk->d_consumer = cp;
 2662                         disk->d_md_data = (void *)pd;
 2663                         cp->private = disk;
 2664 
 2665                         /* Read kernel dumping information. */
 2666                         disk->d_kd.offset = 0;
 2667                         disk->d_kd.length = OFF_MAX;
 2668                         len = sizeof(disk->d_kd);
 2669                         g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd);
 2670                         if (disk->d_kd.di.dumper == NULL)
 2671                                 G_RAID_DEBUG1(2, sc,
 2672                                     "Dumping not supported by %s.",
 2673                                     cp->provider->name);
 2674 
 2675                         /* Welcome the "new" disk. */
 2676                         g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
 2677                         ddf_meta_create(disk, &mdi->mdio_meta);
 2678                         sa = ddf_meta_find_sa(&pd->pd_meta, 1);
 2679                         if (sa != NULL) {
 2680                                 SET32D(&pd->pd_meta, sa->Signature,
 2681                                     DDF_SA_SIGNATURE);
 2682                                 SET8D(&pd->pd_meta, sa->Spare_Type, 0);
 2683                                 SET16D(&pd->pd_meta, sa->Populated_SAEs, 0);
 2684                                 SET16D(&pd->pd_meta, sa->MAX_SAE_Supported,
 2685                                     (GET16(&pd->pd_meta, hdr->Configuration_Record_Length) *
 2686                                      pd->pd_meta.sectorsize -
 2687                                      sizeof(struct ddf_sa_record)) /
 2688                                     sizeof(struct ddf_sa_entry));
 2689                         }
 2690                         if (mdi->mdio_meta.hdr == NULL)
 2691                                 ddf_meta_copy(&mdi->mdio_meta, &pd->pd_meta);
 2692                         else
 2693                                 ddf_meta_update(&mdi->mdio_meta, &pd->pd_meta);
 2694                         g_raid_md_write_ddf(md, NULL, NULL, NULL);
 2695                         g_raid_md_ddf_refill(sc);
 2696                 }
 2697                 return (error);
 2698         }
 2699         return (-100);
 2700 }
 2701 
 2702 static int
 2703 g_raid_md_write_ddf(struct g_raid_md_object *md, struct g_raid_volume *tvol,
 2704     struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
 2705 {
 2706         struct g_raid_softc *sc;
 2707         struct g_raid_volume *vol;
 2708         struct g_raid_subdisk *sd;
 2709         struct g_raid_disk *disk;
 2710         struct g_raid_md_ddf_perdisk *pd;
 2711         struct g_raid_md_ddf_pervolume *pv;
 2712         struct g_raid_md_ddf_object *mdi;
 2713         struct ddf_meta *gmeta;
 2714         struct ddf_vol_meta *vmeta;
 2715         struct ddf_vdc_record *vdc;
 2716         struct ddf_sa_record *sa;
 2717         uint64_t *val2;
 2718         int i, j, pos, bvd, size;
 2719 
 2720         sc = md->mdo_softc;
 2721         mdi = (struct g_raid_md_ddf_object *)md;
 2722         gmeta = &mdi->mdio_meta;
 2723 
 2724         if (sc->sc_stopping == G_RAID_DESTROY_HARD)
 2725                 return (0);
 2726 
 2727         /*
 2728          * Clear disk flags to let only really needed ones to be reset.
 2729          * Do it only if there are no volumes in starting state now,
 2730          * as they can update disk statuses yet and we may kill innocent.
 2731          */
 2732         if (mdi->mdio_starting == 0) {
 2733                 for (i = 0; i < GET16(gmeta, pdr->Populated_PDEs); i++) {
 2734                         if (isff(gmeta->pdr->entry[i].PD_GUID, 24))
 2735                                 continue;
 2736                         SET16(gmeta, pdr->entry[i].PD_Type,
 2737                             GET16(gmeta, pdr->entry[i].PD_Type) &
 2738                             ~(DDF_PDE_PARTICIPATING |
 2739                               DDF_PDE_GLOBAL_SPARE | DDF_PDE_CONFIG_SPARE));
 2740                         if ((GET16(gmeta, pdr->entry[i].PD_State) &
 2741                             DDF_PDE_PFA) == 0)
 2742                                 SET16(gmeta, pdr->entry[i].PD_State, 0);
 2743                 }
 2744         }
 2745 
 2746         /* Generate/update new per-volume metadata. */
 2747         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
 2748                 pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
 2749                 if (vol->v_stopping || !pv->pv_started)
 2750                         continue;
 2751                 vmeta = &pv->pv_meta;
 2752 
 2753                 SET32(vmeta, vdc->Sequence_Number,
 2754                     GET32(vmeta, vdc->Sequence_Number) + 1);
 2755                 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E &&
 2756                     vol->v_disks_count % 2 == 0)
 2757                         SET16(vmeta, vdc->Primary_Element_Count, 2);
 2758                 else
 2759                         SET16(vmeta, vdc->Primary_Element_Count,
 2760                             vol->v_disks_count);
 2761                 SET8(vmeta, vdc->Stripe_Size,
 2762                     ffs(vol->v_strip_size / vol->v_sectorsize) - 1);
 2763                 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E &&
 2764                     vol->v_disks_count % 2 == 0) {
 2765                         SET8(vmeta, vdc->Primary_RAID_Level,
 2766                             DDF_VDCR_RAID1);
 2767                         SET8(vmeta, vdc->RLQ, 0);
 2768                         SET8(vmeta, vdc->Secondary_Element_Count,
 2769                             vol->v_disks_count / 2);
 2770                         SET8(vmeta, vdc->Secondary_RAID_Level, 0);
 2771                 } else {
 2772                         SET8(vmeta, vdc->Primary_RAID_Level,
 2773                             vol->v_raid_level);
 2774                         SET8(vmeta, vdc->RLQ,
 2775                             vol->v_raid_level_qualifier);
 2776                         SET8(vmeta, vdc->Secondary_Element_Count, 1);
 2777                         SET8(vmeta, vdc->Secondary_RAID_Level, 0);
 2778                 }
 2779                 SET8(vmeta, vdc->Secondary_Element_Seq, 0);
 2780                 SET64(vmeta, vdc->Block_Count, 0);
 2781                 SET64(vmeta, vdc->VD_Size, vol->v_mediasize / vol->v_sectorsize);
 2782                 SET16(vmeta, vdc->Block_Size, vol->v_sectorsize);
 2783                 SET8(vmeta, vdc->Rotate_Parity_count,
 2784                     fls(vol->v_rotate_parity) - 1);
 2785                 SET8(vmeta, vdc->MDF_Parity_Disks, vol->v_mdf_pdisks);
 2786                 SET16(vmeta, vdc->MDF_Parity_Generator_Polynomial,
 2787                     vol->v_mdf_polynomial);
 2788                 SET8(vmeta, vdc->MDF_Constant_Generation_Method,
 2789                     vol->v_mdf_method);
 2790 
 2791                 SET16(vmeta, vde->VD_Number, vol->v_global_id);
 2792                 if (vol->v_state <= G_RAID_VOLUME_S_BROKEN)
 2793                         SET8(vmeta, vde->VD_State, DDF_VDE_FAILED);
 2794                 else if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED)
 2795                         SET8(vmeta, vde->VD_State, DDF_VDE_DEGRADED);
 2796                 else if (vol->v_state <= G_RAID_VOLUME_S_SUBOPTIMAL)
 2797                         SET8(vmeta, vde->VD_State, DDF_VDE_PARTIAL);
 2798                 else
 2799                         SET8(vmeta, vde->VD_State, DDF_VDE_OPTIMAL);
 2800                 if (vol->v_dirty ||
 2801                     g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_STALE) > 0 ||
 2802                     g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_RESYNC) > 0)
 2803                         SET8(vmeta, vde->VD_State,
 2804                             GET8(vmeta, vde->VD_State) | DDF_VDE_DIRTY);
 2805                 SET8(vmeta, vde->Init_State, DDF_VDE_INIT_FULL); // XXX
 2806                 ddf_meta_put_name(vmeta, vol->v_name);
 2807 
 2808                 for (i = 0; i < vol->v_disks_count; i++) {
 2809                         sd = &vol->v_subdisks[i];
 2810                         bvd = i / GET16(vmeta, vdc->Primary_Element_Count);
 2811                         pos = i % GET16(vmeta, vdc->Primary_Element_Count);
 2812                         disk = sd->sd_disk;
 2813                         if (disk != NULL) {
 2814                                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
 2815                                 if (vmeta->bvdc[bvd] == NULL) {
 2816                                         size = GET16(vmeta,
 2817                                             hdr->Configuration_Record_Length) *
 2818                                             vmeta->sectorsize;
 2819                                         vmeta->bvdc[bvd] = malloc(size,
 2820                                             M_MD_DDF, M_WAITOK);
 2821                                         memset(vmeta->bvdc[bvd], 0xff, size);
 2822                                 }
 2823                                 memcpy(vmeta->bvdc[bvd], vmeta->vdc,
 2824                                     sizeof(struct ddf_vdc_record));
 2825                                 SET8(vmeta, bvdc[bvd]->Secondary_Element_Seq, bvd);
 2826                                 SET64(vmeta, bvdc[bvd]->Block_Count,
 2827                                     sd->sd_size / vol->v_sectorsize);
 2828                                 SET32(vmeta, bvdc[bvd]->Physical_Disk_Sequence[pos],
 2829                                     GET32(&pd->pd_meta, pdd->PD_Reference));
 2830                                 val2 = (uint64_t *)&(vmeta->bvdc[bvd]->Physical_Disk_Sequence[
 2831                                     GET16(vmeta, hdr->Max_Primary_Element_Entries)]);
 2832                                 SET64P(vmeta, val2 + pos,
 2833                                     sd->sd_offset / vol->v_sectorsize);
 2834                         }
 2835                         if (vmeta->bvdc[bvd] == NULL)
 2836                                 continue;
 2837 
 2838                         j = ddf_meta_find_pd(gmeta, NULL,
 2839                             GET32(vmeta, bvdc[bvd]->Physical_Disk_Sequence[pos]));
 2840                         if (j < 0)
 2841                                 continue;
 2842                         SET32(gmeta, pdr->entry[j].PD_Type,
 2843                             GET32(gmeta, pdr->entry[j].PD_Type) |
 2844                             DDF_PDE_PARTICIPATING);
 2845                         if (sd->sd_state == G_RAID_SUBDISK_S_NONE)
 2846                                 SET32(gmeta, pdr->entry[j].PD_State,
 2847                                     GET32(gmeta, pdr->entry[j].PD_State) |
 2848                                     (DDF_PDE_FAILED | DDF_PDE_MISSING));
 2849                         else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED)
 2850                                 SET32(gmeta, pdr->entry[j].PD_State,
 2851                                     GET32(gmeta, pdr->entry[j].PD_State) |
 2852                                     (DDF_PDE_FAILED | DDF_PDE_PFA));
 2853                         else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD)
 2854                                 SET32(gmeta, pdr->entry[j].PD_State,
 2855                                     GET32(gmeta, pdr->entry[j].PD_State) |
 2856                                     DDF_PDE_REBUILD);
 2857                         else
 2858                                 SET32(gmeta, pdr->entry[j].PD_State,
 2859                                     GET32(gmeta, pdr->entry[j].PD_State) |
 2860                                     DDF_PDE_ONLINE);
 2861                 }
 2862         }
 2863 
 2864         /* Mark spare and failed disks as such. */
 2865         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 2866                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
 2867                 i = ddf_meta_find_pd(gmeta, NULL,
 2868                     GET32(&pd->pd_meta, pdd->PD_Reference));
 2869                 if (i < 0)
 2870                         continue;
 2871                 if (disk->d_state == G_RAID_DISK_S_FAILED) {
 2872                         SET32(gmeta, pdr->entry[i].PD_State,
 2873                             GET32(gmeta, pdr->entry[i].PD_State) |
 2874                             (DDF_PDE_FAILED | DDF_PDE_PFA));
 2875                 }
 2876                 if (disk->d_state != G_RAID_DISK_S_SPARE)
 2877                         continue;
 2878                 sa = ddf_meta_find_sa(&pd->pd_meta, 0);
 2879                 if (sa == NULL ||
 2880                     (GET8D(&pd->pd_meta, sa->Spare_Type) &
 2881                      DDF_SAR_TYPE_DEDICATED) == 0) {
 2882                         SET16(gmeta, pdr->entry[i].PD_Type,
 2883                             GET16(gmeta, pdr->entry[i].PD_Type) |
 2884                             DDF_PDE_GLOBAL_SPARE);
 2885                 } else {
 2886                         SET16(gmeta, pdr->entry[i].PD_Type,
 2887                             GET16(gmeta, pdr->entry[i].PD_Type) |
 2888                             DDF_PDE_CONFIG_SPARE);
 2889                 }
 2890                 SET32(gmeta, pdr->entry[i].PD_State,
 2891                     GET32(gmeta, pdr->entry[i].PD_State) |
 2892                     DDF_PDE_ONLINE);
 2893         }
 2894 
 2895         /* Remove disks without "participating" flag (unused). */
 2896         for (i = 0, j = -1; i < GET16(gmeta, pdr->Populated_PDEs); i++) {
 2897                 if (isff(gmeta->pdr->entry[i].PD_GUID, 24))
 2898                         continue;
 2899                 if ((GET16(gmeta, pdr->entry[i].PD_Type) &
 2900                     (DDF_PDE_PARTICIPATING |
 2901                      DDF_PDE_GLOBAL_SPARE | DDF_PDE_CONFIG_SPARE)) != 0 ||
 2902                     g_raid_md_ddf_get_disk(sc,
 2903                      NULL, GET32(gmeta, pdr->entry[i].PD_Reference)) != NULL)
 2904                         j = i;
 2905                 else
 2906                         memset(&gmeta->pdr->entry[i], 0xff,
 2907                             sizeof(struct ddf_pd_entry));
 2908         }
 2909         SET16(gmeta, pdr->Populated_PDEs, j + 1);
 2910 
 2911         /* Update per-disk metadata and write them. */
 2912         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 2913                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
 2914                 if (disk->d_state != G_RAID_DISK_S_ACTIVE &&
 2915                     disk->d_state != G_RAID_DISK_S_SPARE)
 2916                         continue;
 2917                 /* Update PDR. */
 2918                 memcpy(pd->pd_meta.pdr, gmeta->pdr,
 2919                     GET32(&pd->pd_meta, hdr->pdr_length) *
 2920                     pd->pd_meta.sectorsize);
 2921                 /* Update VDR. */
 2922                 SET16(&pd->pd_meta, vdr->Populated_VDEs, 0);
 2923                 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
 2924                         if (vol->v_stopping)
 2925                                 continue;
 2926                         pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
 2927                         i = ddf_meta_find_vd(&pd->pd_meta,
 2928                             pv->pv_meta.vde->VD_GUID);
 2929                         if (i < 0)
 2930                                 i = ddf_meta_find_vd(&pd->pd_meta, NULL);
 2931                         if (i >= 0)
 2932                                 memcpy(&pd->pd_meta.vdr->entry[i],
 2933                                     pv->pv_meta.vde,
 2934                                     sizeof(struct ddf_vd_entry));
 2935                 }
 2936                 /* Update VDC. */
 2937                 if (mdi->mdio_starting == 0) {
 2938                         /* Remove all VDCs to restore needed later. */
 2939                         j = GETCRNUM(&pd->pd_meta);
 2940                         for (i = 0; i < j; i++) {
 2941                                 vdc = GETVDCPTR(&pd->pd_meta, i);
 2942                                 if (GET32D(&pd->pd_meta, vdc->Signature) !=
 2943                                     DDF_VDCR_SIGNATURE)
 2944                                         continue;
 2945                                 SET32D(&pd->pd_meta, vdc->Signature, 0xffffffff);
 2946                         }
 2947                 }
 2948                 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
 2949                         vol = sd->sd_volume;
 2950                         if (vol->v_stopping)
 2951                                 continue;
 2952                         pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
 2953                         vmeta = &pv->pv_meta;
 2954                         vdc = ddf_meta_find_vdc(&pd->pd_meta,
 2955                             vmeta->vde->VD_GUID);
 2956                         if (vdc == NULL)
 2957                                 vdc = ddf_meta_find_vdc(&pd->pd_meta, NULL);
 2958                         if (vdc != NULL) {
 2959                                 bvd = sd->sd_pos / GET16(vmeta,
 2960                                     vdc->Primary_Element_Count);
 2961                                 memcpy(vdc, vmeta->bvdc[bvd],
 2962                                     GET16(&pd->pd_meta,
 2963                                     hdr->Configuration_Record_Length) *
 2964                                     pd->pd_meta.sectorsize);
 2965                         }
 2966                 }
 2967                 G_RAID_DEBUG(1, "Writing DDF metadata to %s",
 2968                     g_raid_get_diskname(disk));
 2969                 g_raid_md_ddf_print(&pd->pd_meta);
 2970                 ddf_meta_write(disk->d_consumer, &pd->pd_meta);
 2971         }
 2972         return (0);
 2973 }
 2974 
 2975 static int
 2976 g_raid_md_fail_disk_ddf(struct g_raid_md_object *md,
 2977     struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
 2978 {
 2979         struct g_raid_softc *sc;
 2980         struct g_raid_md_ddf_perdisk *pd;
 2981         struct g_raid_subdisk *sd;
 2982         int i;
 2983 
 2984         sc = md->mdo_softc;
 2985         pd = (struct g_raid_md_ddf_perdisk *)tdisk->d_md_data;
 2986 
 2987         /* We can't fail disk that is not a part of array now. */
 2988         if (tdisk->d_state != G_RAID_DISK_S_ACTIVE)
 2989                 return (-1);
 2990 
 2991         /*
 2992          * Mark disk as failed in metadata and try to write that metadata
 2993          * to the disk itself to prevent it's later resurrection as STALE.
 2994          */
 2995         G_RAID_DEBUG(1, "Writing DDF metadata to %s",
 2996             g_raid_get_diskname(tdisk));
 2997         i = ddf_meta_find_pd(&pd->pd_meta, NULL, GET32(&pd->pd_meta, pdd->PD_Reference));
 2998         SET16(&pd->pd_meta, pdr->entry[i].PD_State, DDF_PDE_FAILED | DDF_PDE_PFA);
 2999         if (tdisk->d_consumer != NULL)
 3000                 ddf_meta_write(tdisk->d_consumer, &pd->pd_meta);
 3001 
 3002         /* Change states. */
 3003         g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
 3004         TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
 3005                 g_raid_change_subdisk_state(sd,
 3006                     G_RAID_SUBDISK_S_FAILED);
 3007                 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
 3008                     G_RAID_EVENT_SUBDISK);
 3009         }
 3010 
 3011         /* Write updated metadata to remaining disks. */
 3012         g_raid_md_write_ddf(md, NULL, NULL, tdisk);
 3013 
 3014         g_raid_md_ddf_refill(sc);
 3015         return (0);
 3016 }
 3017 
 3018 static int
 3019 g_raid_md_free_disk_ddf(struct g_raid_md_object *md,
 3020     struct g_raid_disk *disk)
 3021 {
 3022         struct g_raid_md_ddf_perdisk *pd;
 3023 
 3024         pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
 3025         ddf_meta_free(&pd->pd_meta);
 3026         free(pd, M_MD_DDF);
 3027         disk->d_md_data = NULL;
 3028         return (0);
 3029 }
 3030 
 3031 static int
 3032 g_raid_md_free_volume_ddf(struct g_raid_md_object *md,
 3033     struct g_raid_volume *vol)
 3034 {
 3035         struct g_raid_md_ddf_object *mdi;
 3036         struct g_raid_md_ddf_pervolume *pv;
 3037 
 3038         mdi = (struct g_raid_md_ddf_object *)md;
 3039         pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
 3040         ddf_vol_meta_free(&pv->pv_meta);
 3041         if (!pv->pv_started) {
 3042                 pv->pv_started = 1;
 3043                 mdi->mdio_starting--;
 3044                 callout_stop(&pv->pv_start_co);
 3045         }
 3046         free(pv, M_MD_DDF);
 3047         vol->v_md_data = NULL;
 3048         return (0);
 3049 }
 3050 
 3051 static int
 3052 g_raid_md_free_ddf(struct g_raid_md_object *md)
 3053 {
 3054         struct g_raid_md_ddf_object *mdi;
 3055 
 3056         mdi = (struct g_raid_md_ddf_object *)md;
 3057         if (!mdi->mdio_started) {
 3058                 mdi->mdio_started = 0;
 3059                 callout_stop(&mdi->mdio_start_co);
 3060                 G_RAID_DEBUG1(1, md->mdo_softc,
 3061                     "root_mount_rel %p", mdi->mdio_rootmount);
 3062                 root_mount_rel(mdi->mdio_rootmount);
 3063                 mdi->mdio_rootmount = NULL;
 3064         }
 3065         ddf_meta_free(&mdi->mdio_meta);
 3066         return (0);
 3067 }
 3068 
 3069 G_RAID_MD_DECLARE(ddf, "DDF");
Cache object: c34bd25382b0ab2c905a24a018f999a1
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FreeBSD/Linux Kernel Cross Reference sys/geom/raid/md_ddf.c

FreeBSD/Linux Kernel Cross Reference
sys/geom/raid/md_ddf.c
